When a California housewife is murdered in broad daylight, the suspected killer claims it was a burglary gone awry.

The convicted murderer of a popular teacher is given a second chance at freedom when new evidence is revealed.

A woman is abducted, turning an evening at a Mississippi casino into a nightmare; investigators uncover some startling truths and countless suspects, but it's a shocking twist that finally leads to an unexpected arrest.

When a celebration starts to sour, tempers flare and someone vanishes; days later, a body is discovered in an unsavory part of a Northern California town; after the case goes cold, it takes an unexpected plea to finally catch a killer.

Kelly and Abbey Abbondandolo investigate the cold-blooded killing of a tow truck business owner, and uncover a twisted world of alleged abuse, infidelity, and a possible murder-for-hire plot.

Kelly and Steve Spingola investigate the strange case of a man who appeared to have died from natural causes; when his cremation revealed a bullet in his body, his death became a murder investigation.

Kelly and Tonya help police keep their promise to a grieving mother to solve her daughter's murder; an examination of the victim's cell phone data brings a horrifying tale of obsession and brutality to light.

The team tackles the mysterious 1986 murder of a young Native American mother whose skull was found in the woods; her infant daughter, now grown, is desperate to know if her father was involved.

A nurse's loved ones worry something is terribly wrong when she goes missing, and with a harsh winter ahead, investigators race to find out the truth.

When a mother is found beaten to death and sexually assaulted in downtown Anchorage, police embark on an uphill investigation that includes groundbreaking forensic work, hours of surveillance footage, and an unlikely suspect.

Evidence points to an unlikely killer when a rookie detective revives the decade-old case of a woman who was brutally stabbed and dumped off an isolated road.

A 19-year-old woman with a promising future turns up dead with a single gunshot wound to the back of the head and the trail leads to a rogue police officer.

A beloved Colorado postal worker and father is brutally gunned down on his daily route leaving authorities scrambling to piece together the evidence and find out who would want to execute this well-loved member of their community.

The apparent disappearance of a loving mother and wife seems to be an unsolvable puzzle, until a resolute Ohio detective teams up with an unlikely partner, the woman's heroic 11-year-old son.

An in-depth look at the complexities of the case against Aileen Wuornos, the woman branded as America's first female serial killer; questions still revolve around her claim of self-defense and whether or not she got the justice she deserved.

Colleen Stan relives what it was like to be kidnapped and imprisoned in a box, and how she escaped.

From 1993 to 2000, the quiet community of Fort Smith, Ark., is terrorized by a twisted serial killer, a deranged necrophiliac who targets elderly and vulnerable women; he becomes known as The River Valley Killer.

The stories of five women who suffered vile abuse while trapped inside the home of a prolific serial killer from which they eventually escaped.

When an elderly woman finds her husband murdered in bed, police race to find the cold-blooded killer.

When a mother is murdered in a home invasion the day before her best friend is shot outside the place they both worked, investigators suspect the crimes are linked.

When a mother is murdered in a home invasion the day before her best friend is shot outside the place they both worked, investigators suspect the crimes are linked.

Archie McFarland was stabbed to death and his murder went unsolved for twenty-five years.

At quitting time, guys belly up to the bar at a local establishment; when the mood shifts, someone winds up dead; when another local person goes missing, neighbors fear a killer is hiding among them.

An Indiana college student heads home after her shift, but her car is found abandoned hours later; after two horrifying discoveries, investigators wonder if they're dealing with a small-town serial killer.

When a young soldier disappears at an Army base in North Carolina, the police, military and community band together to try to find her; with time running out, a bounty hunter turned PI enacts a plan to coax a suspect to confess to her whereabouts.

A mother's worry ignites when two teenage girls never come home after getting lost heading to a party in southeast Alabama; when their car is found abandoned, their small town unites to find them and uncover what happened.

Religion is a way of life in Raleigh-Durham, N.C., so when a 21-year-old church-going HBCU coed is found stabbed to death on the side of the road, investigators must uncover the sins under the surface of this sacred community.

A serial killer terrorizes a small-town Texas hospital, secretly murdering patients with a cold and calculated bloodlust; as the body count rises, administrators and police work together to uncover the killer and get justice.

Phoenix Coldon vanishes; investigative reporter, Shawndrea Thomas, and retired deputy Police Chief Joe Delia attempt to unravel the mysterious unsolved case in the hope of finding justice for Phoenix.

Joe and Shawndrea follow up on a handful of Phoenix sightings since her disappearance and begin to question whether she'd been lured into a new life more dangerous than she could have anticipated; a surprising lead goes to an unexpected locale.

When 18-year-old Anjelica AJ Hadsell disappears, the investigation into her inner circle reveals a sinister betrayal.

When Nichole Payne and her son Taylor are found dead in their home, investigators wonder if this is a murder-suicide or if someone wants it to look that way. The mystery takes nearly a decade to unravel.

When 19-year-old Anton Black dies while being taken into police custody, the community seeks justice; a yearlong investigation looks at missed warning signs and the officer at the center of the case.

Angel's Landing was a community of free-spirits with Lou Castro at its center; Investigators suspicious of the mysterious deaths happening there; commune members have courageously decided to tell their stories in hopes of helping others.

A month after Mollie Tibbetts' disappearance in Iowa, investigators discover surveillance video that captured a blurred image of Mollie jogging while being followed by a mysterious black car.

The investigation into a newlywed's murder starts with a widow; ends with a possible serial killer.

Detectives in Portland, Oregon, discover a puzzling connection between the 2018 murder of chef Dan Brophy and a blog post written years earlier, titled How to Murder Your Husband.

A 40-year-old Minnesota woman is shot to death in her bed while her husband and teenage daughter are home, leaving investigators to wonder who would want her dead.

A beloved grandmother is found with a red bathrobe sash knotted around her neck; her death appears to be a suicide until the medical examiner rules homicide; the victim's husband is charged with murder, but the case takes a surprising turn.

A car crash on a rural highway leaves one woman dead while her husband walks away unscathed; it appears to be a tragic accident, but one state trooper can't shake the feeling the crash is anything but routine.

The disappearance of a 20-year-old honors student causes her family to fear the worst; decades later, the mystery is solved.

The disappearance of a 20-year-old honors student causes her family to fear the worst; decades later, the mystery is solved.

The battle between a wife and a mistress for one man's heart leads to a deadly car chase.

Rowdy night at Chicago pub turns deadly when daybreak reveals mutilated body; police cross state lines to track a killer, but it will take an unexpected call and a brutal betrayal to finally solve this case and find justice.

College buddies crash a party during which alcohol flows and jealousy rages ending in death; the case goes cold for more than a decade before the truth is finally uncovered and justice is served.

The holiday season screeches to a halt when six members of the Anderson family are discovered to have been gunned down in their home; detectives work closely with family friends to track down the shocking murderer.

The Ortega family's annual Christmas Eve party is destroyed when a man dressed as Santa, wielding handguns and a homemade flame-thrower opens fire; detectives are led down a terrifying path that leads them to a sociopath.

When a welfare check on a local real estate tycoon reveals a gruesome murder scene, investigators must sift through alleged drug use, revenge and a case of mistaken identity to uncover a bombshell of a killer.

The murder of a U.S. airman leads Las Vegas investigators down a twisted path to one woman's offbeat oasis and ties to an unusual fan club.

After a woman reports that she and her husband were attacked by a pair of assailants, authorities in Oregon launch an investigation into the crime and unravel a complex scheme.

To solve the sudden and violent murder of a retired landscape architect, investigators weed through information about a disgruntled neighbor and an illicit affair only to find that seeds of resentment are often planted close to home.

After a man is found executed in his home, police go down a winding road of greed, drugs and heartbreak to uncover a spiteful murderer.

Kelsey Berreth vanishes after she was last seen grocery shopping on Thanksgiving; the case makes national headlines, but the secret behind Kelsey's disappearance is lurking much closer to home.

A college student is found murdered in a residential neighborhood; the police search for the truth, they are stunned to learn that one of their own might be involved.

The mystery of a surgeon's whereabouts remains unanswered for five years after he disappears while on vacation with his wife, leaving behind financial ruin and mounting malpractice suits.

Eleven years after Connecticut mother Donna Palomba is raped in her home, investigators finally track down her attacker; Donna speaks out about the case, including her fight to keep her assailant from walking free.

When Susan Woods doesn't show up for work, she is soon discovered dead in her bathtub; police search for answers, and find a trail of victims.

A popular therapist suffers a deadly attack in her Hollywood Hills home and police must trace a trail of deadly obsession and rage to find her killer.

When a loving couple is discovered murdered execution-style in front of their Kansas home, police race to uncover the truth about who wanted them dead.

A young art student from Texas is found murdered in her bed with no sign of forced entry, indicating that she knew her killer.

A young art student from Texas is found murdered in her bed with no sign of forced entry, indicating that she knew her killer.

The FBI gets involved when a Virginia man's wife and son are kidnapped while vacationing in the Philippines, with a terrorist group demanding millions in ransom.

Friends in New Orleans hit the town for a night out; but one of them is found dead in the trunk of a burned-out car the following morning; no one escapes suspicion, but it's the victim's own words that eventually help bring down her killer.

After a night out with good friends in Minneapolis, one of them disappears; days later, when human remains are discovered, investigators travel a chilling path to catch a killer before another night ends in murder.

A serial shooter terrorizes the quiet Atlanta suburb of East Point, leaving a trail of bodies and cryptic notes in his wake; with five shootings and counting, investigators race against the clock to find the killer before he strikes again.

The newly elected Dekalb County sheriff is murdered just days before taking office; when the task force digs into who would kill such a decorated public figure, they uncover a chilling conspiracy that shakes Atlanta law enforcement to its core.

With no evidence and no witnesses, detectives must find a murderer when a hero of Atlanta's West End is executed in front of his home, but the community is in disbelief when the killer is finally brought to justice and identified.

When 21-year-old Julie Gonzalez disappears in Austin, Texas, her family is determined to find her and never gives up; after a slow start, law enforcement uses a national television appearance and a gaming device to expose the deadly truth.

Dawn Sandoval is hoping to start over after a recent divorce, but as soon as she dives into the dating world she vanishes into thin air, leaving behind a mystery in the New Mexico desert that ends with a horrifying discovery.

Family man and all-around nice guy, Trent Mallory is murdered in his sleep in rural upper Michigan; sorting through multiple suspects and motives, the police set a trap to catch his cold-hearted killer.

After a single mother is found murdered in her Kentucky home, detectives follow a twisted trail littered with lies to identify the mastermind behind this vicious killing.

The disappearance of a devoted father reveals a treasure trove of family secrets and exposes a twisted plot driven by greed.

When a Kansas woman is found murdered in her home, investigators fear her missing teenage daughter has met with a similar fate; they scour the area for clues until rumors guide them to an unlikely mastermind.

When an apparent slam-dunk murder investigation becomes muddied by convoluted stories, police discover their star witness is much closer to the murderer than they were initially led to believe.

The cold-case shooting of a Norwood, N.C., man leaves his family shattered and without answers; after two decades pass, the investigation resumes only to uncover mysterious deaths spanning a half century.

Police unearth evidence that leads them to the ruthless killer of a well-known mechanic, who is found floating in a Tennessee river.

After two Colorado women vanish in a deadly winter storm, key evidence keeps the case open for investigators to uncover the truth; a harrowing blizzard rescue the very same night could hold the clues to an almost 40-year search for the killer.

On Christmas Eve in a quiet town, elderly couple Bob and Idella Young are brutally slain at home; a bloody glove found at the crime scene has the killer's DNA, but no one matches the sample.

Two days after Christmas a mass shooting terrorizes a small town; after killing two people and wounding many more the gunman is taken into custody; when police search for answers they uncover the worst family massacre in US history.

After a family is found massacred inside their Santa Claus, Georgia home, the hunt for their killer hinges on the eyewitness testimony of the three young surviving daughters.

A secretary is found shot in the head inside a suburban Philadelphia church, putting the close-knit congregation on edge; as gossip and theories swirl, detectives unfold a strange tale of jealousy.

When a Costa Rican computer programmer in search of the American Dream appears dead in his bathtub; detectives dive into a complex web of love, betrayal and organized crime, uncovering an unimaginable motive behind his brutal murder.

The residents of a glamorous resort town are shocked when a well-known woman from a prominent family is found dead in her home.

The residents of a glamorous resort town are shocked when a well-known woman from a prominent family is found dead in her home.

Michelle Hadley is exonerated after spending three months in jail for attempted forcible rape of her ex-fiance's wife.

When a woman's remains are found miles from her home, investigators start digging into her past.

An aspiring Playboy model is brutally murdered in Miami after visiting a nightclub with her boyfriend.

Truck driver is found shot to death in the cab of his semi; detectives in California follow a trail of deceit to uncover a killer who will stop at nothing to walk free.

After the brutal attack of a single mother in her own home, authorities work for two decades to uncover an unlikely criminal who uses the power of lust as a deadly weapon.

Mother found dead; another woman targeted; two mysterious crimes tied together with a shocking common ground; excessive pride proves to be the downfall of one sinful perpetrator trying to preserve their reputation.

A shooting in the central Florida community of Deltona leaves a young man dead; while his fiancée mourns the death of her partner, police dig into their past to try and find out who would want to end their life together before it began.

A beloved Colorado postal worker and father is brutally gunned down on his daily route leaving authorities scrambling to piece together the evidence and find out who would want to execute this well-loved member of their community.

A respected and beloved chiropractor is found bludgeoned to death in his home outside Philadelphia; investigators take a hard look at those closest to him, but soon learn the murderer is someone they least expect.

A secretary is found shot in the head inside a suburban Philadelphia church, putting the close-knit congregation on edge; as gossip and theories swirl, detectives unfold a strange tale of jealousy.

Two unusual accidents that are two decades apart leave a family suspicious of a father who appears to benefit from tragedy.

When a late-night party in the home of a celebrity basketball player turns deadly, a curious web of lies leads detectives on a rocky road to the truth to find justice for the unlikely victim.

A 2004 welfare check spirals into a sinister tableau of death when Idaho Sheriffs make forceful entry into a home only to discover a horrific crime scene provoked by a cult-like prophecy, revealing a shocking truth that no one saw coming.

A local celebrity is fatally shot in his bedroom, and while debt and depression point to suicide, forensic evidence and expert testimony hint at something more sinister.

A police officer reports that he found his wife dead in their home, but when the scene says suicide and the family says otherwise, the investigation spills across state lines to reveal the truth.

When an experienced outdoorsman is found stabbed to death on a hunting trip, investigators work tirelessly to eventually uncover the truth.

A beloved matriarch is found viciously murdered in her suburban Philadelphia home; detectives investigate the victim's inner circle and uncover a killer hidden in plain sight.

When newlyweds are gunned down outside a Texas church, small town cops realize they know the victims as they uncover a murder plot fueled by twisted family ties.

A young woman appears strangled and posed in the Kensington neighborhood; when more victims are found assaulted in an eerily similar fashion, detectives race against the clock to find the perpetrator before he strikes again.

A beloved matriarch is found viciously murdered in her suburban Philadelphia home; detectives investigate the victim's inner circle and uncover a killer hidden in plain sight.

When an experienced outdoorsman is found stabbed to death on a hunting trip, investigators work tirelessly to eventually uncover the truth.

Firefighters discover the charred remains of a young wife and mother, but the flames didn't kill her; she sustained a gunshot wound to the head, and the evidence points to her taking her own life; loved ones argue it's a case of murder.

After young father Matthew Podolak dies from antifreeze poisoning, the manner of his death remains undetermined until his brother embarks on a quest for the truth.

After young father Matthew Podolak dies from antifreeze poisoning, the manner of his death remains undetermined until his brother embarks on a quest for the truth.

After a woman disappears on a bone-chilling night, her husband provides a strange alibi, claiming he was camping at the time with their two young sons.

A Chicago Bears football player's relationship with a woman who is expecting their first child ends in tragedy.

Abducted in Ecuador, a young woman hatches a plan to escape using something hidden at the bottom of her bag.

Dayton, Ohio, is terrorized over the Christmas holiday as a string of brutal shootings have the residents wondering if they could be next.

Beloved Christmas tree farmers are executed in the front seat of their car and a manhunt for their killer is launched that keeps investigators on the case for over three decades before justice is served.

When a young mother is murdered during Christmas, investigators uncover a love triangle that shocks her family and forever robs them of their holiday cheer.

After a home invasion in Ohio leaves a corrections officer dead, investigators use controlled calls and an undercover sting at a motel to solve the case and expose a cruel plot with a bloody ending.

An investigation into the disappearance of an Arkansas couple leads a law enforcement team on a manhunt through the rugged terrain of the Ozarks and into unforeseen danger.

When a revered fire lieutenant is gunned down in his driveway, detectives navigate stories of a long-standing neighborhood feud and a surprise cancer scare to piece together a conspiracy plot involving young pawns manipulated by a cunning mastermind.

After a man is shot just a few feet inside his New York home, the ensuing investigation brings to light a murder-for-hire plot spurred by greed.

When police searching for a missing Indiana man discover a body on a riverbank, they launch an investigation that unearths a surprising story of an open marriage and evidence of a brutal torture.

Police in a small Pennsylvania town respond to an eyewitness report of a murder behind a grocery store and find that the victim is no stranger to law enforcement.

When a young mother is executed and her family critically injured, investigators piece together haunting clues and an earlier murder to capture deranged killers with a spiritual calling.

After an avid outdoorsman dies from an apparent suicide, South Carolina investigators must unravel a murky story of mental health struggles and a complicated marriage that led to his death.

When a businessman is gunned down in his home by a masked assailant, police scramble to figure out who could have wanted him dead; the case leads them on a bloody cross-country trek.

A beloved matriarch is found viciously murdered in her suburban Philadelphia home; detectives investigate the victim's inner circle and uncover a killer hidden in plain sight.

After a young mother disappears with a woman claiming to be a social worker, an investigation into her whereabouts ends in a gruesome discovery.

A family recovering from a devastating loss is hit with another when a man finds his sister stabbed to death in her living room.

When a businessman is gunned down in his home by a masked assailant, police scramble to figure out who could have wanted him dead; the case leads them on a bloody cross-country trek.

The murder of a popular hairdresser in Cleveland leaves police stunned and desperate for answers; an unexpected break comes when a routine traffic stop in a neighboring county uncovers a vicious and deadly plot no one saw coming.

A powerful lawyer and his new bride are slain; detectives try to track down a scorned socialite, and they unearth twisted tales of adultery, restraining orders and alleged abuse.

A secretary is found shot in the head inside a suburban Philadelphia church, putting the close-knit congregation on edge; as gossip and theories swirl, detectives unfold a strange tale of jealousy.

A man of extraordinary power and prestige lives a double life.

A man of extraordinary power and prestige lives a double life.

A woman from a small town moves to the big city of Las Vegas, where she finds a new career and a new love, then she vanishes, and her body is found within a few days, but discovering her killer will be a tougher mystery to crack.

When a beloved man is murdered on Mississippi's Gulf Coast, the slippery killer keeps police on their toes in a wild manhunt; investigators stop at nothing to uncover this twisted trail of lies and fraud as they work to bring some southern justice.

Amid the chaos of post-Hurricane Katrina, a devout pastor is mysteriously murdered in New Orleans; a second unsolved murder with the same signature leads investigators to a brazen killer weaving a deadly web.

Owners of Miami's glamorous Fontainebleau Hotel are struck by tragedy when their matriarch is found dead in her home; terror sets in when her son is murdered not long after, making detectives wonder if someone is trying to take down this dynasty.

When a triple homicide rocks a Christmas tree-farming community, two small-town sheriffs across state lines have to work together to find the perpetrator among the Blue Ridge Mountains.

The murder of a beloved anti-gun violence activist haunts Savannah, Georgia, during a summer-long shooting spree; with word of missing gambling winnings, detectives work to piece together what happened to solve the case and stop the terror.

A mysterious double shooting outside of a record label in Nashville leaves music city clamoring for answers; investigators search for clues and along the way are brought into the sordid underbelly of the country music industry.

A family's life is turned upside down when a ghost from their past returns for revenge.

When a devout single mother vanishes from her home, investigators fear she's been abducted by a group of teens hell-bent on a devilish plan; they race to find her before it's too late.

When a man goes missing in a rural small town in Tennessee, family members and detectives band together to uncover scandalous secrets fueled by greed and lust.

After a beloved father vanishes, his family and the police work tirelessly for four years to find him; a familiar witness comes forward and leads detectives to finally expose a diabolical conspiracy which may have been paid for by sexual favors.

After a well-known saddle maker passes away from an apparent heart attack, police find reason to question the natural death after rumors about drugs and embezzlement come to light.

A victim's burning body is discovered one night in February and investigators are put on the trail of an elusive criminal whose desire for financial gain leads to murder.

When a household is targeted by gunfire twice in a short amount of time, investigators in rural Missouri sift through a community in search of a family's enemies, which leads them to a mastermind pulling strings.

An investigation into the mysterious death of a loving mother leads authorities to uncover a diabolical plot hatched close to home.

In January 1982, Lynette Dawson, a loving wife and mother, disappears; days later, her husband Christopher Dawson moves their teenage babysitter into their home; 40 years later, a podcast reveals the terrible truth.

Six Belgian girls mysteriously go missing at the hands of The Monster, Belgium's infamous serial killer; once the culprit is unmasked, police realize they may have stumbled upon a child sex slavery ring with powerful allies.

The apparent disappearance of a loving mother and wife seems to be an unsolvable puzzle, until a resolute Ohio detective teams up with an unlikely partner, the woman's heroic 11-year-old son.

An 80-year-old woman is found in her home lying in a pool of blood; her death is ruled an accident, but her family suspects foul play.

A decorated war hero is found in his home, the victim of an apparent drug overdose. Investigators uncover a twisted story of fraud and betrayal that leads to a stunning conclusion.

A case makes headlines when the defendant argues he was too obese to have committed murder.

When long-haul truck driver Lloyd Ford disappears, it doesn't raise many red flags, but two people know where he is and guard the secret for 27 years.

A murder on Valentine's Day leads to a trial with unexpected twists and turns and a surprise ending.

A teen makes a 911 call claiming his grandmother shot him, but detectives uncover drugs and deep familial conflicts spanning a generational divide, leaving a jury questioning who to believe.

After best friends spend an evening Christmas shopping, the night ends with one man fatally shooting the other; the survivor claims self-defense, but his foggy memory, forensic evidence and witness accounts suggest there could be more to the story.

An aspiring doctor shoots her husband in front of their two sons on the side of a Nebraska interstate; a jury must decide whether this was an abused woman defending her life or a fed-up wife who wanted out of her marriage.

A family is in shock when their patriarch kills his brother-in-law and claims self-defense; when police uncover a bizarre story of missing cash and betrayal among this tight-knit immigrant family, the community doesn't know what or who to believe.

A former Marine is fatally shot by his neighbor in broad daylight; the shooter claims self-defense, but eyewitnesses state he was the aggressor; when investigators uncover a feud between the two, it calls both of their motivations into question.

Hector Campos fatally shoots neighbor Ana Weed after an argument on their property line; while Hector takes to national TV to plead self-defense, Ana's family reveals to investigators a tale of betrayal, secret spouses and a fateful escape to Mexico.

Seventeen-year-old Anthony Templet calls 911, confessing to shooting his father in self-defense; with no signs of a physical attack, authorities suspect murder; as the investigation unfolds, the dark underbelly of the family is exposed.

When a mother and her two daughters fail to show up for Christmas dinner, officers enter their home and discover all three have been shot to death; the search for their killer reveals an unthinkable family nightmare.

Just after Christmas, a young couple is found murdered inside their Florida home; neighbors can't imagine the couple had been in the area long enough to make a mortal enemy; police uncover deeply personal details, and soon expose a deadly secret.

A beloved couple is found murdered inside their home on Christmas morning; a single palm print is left behind; investigators work tirelessly to match the print to a suspect, until a letter from prison takes the case on an unexpected course.

After a family is found massacred inside their Santa Claus, Georgia home, the hunt for their killer hinges on the eyewitness testimony of the three young surviving daughters.

Firefighters respond to a house fire and discover three gunshot victims inside; authorities pursue the heavily armed murderer through Christmas.

After an endearing World War II veteran and family man is laid to rest from apparent natural causes, a surprise witness surfaces with murder accusations, sparking a police investigation into a devious predator.

Mother found dead; another woman targeted; two mysterious crimes tied together with a shocking common ground; excessive pride proves to be the downfall of one sinful perpetrator trying to preserve their reputation.

The trial of Scott Peterson who was convicted for the murder of his wife and unborn child.

When a man is ambushed by a firestorm of bullets outside his home, investigators follow a twisted trail of suspects to a vindictive mastermind.

A woman's innocence is called into question after her husband dies from a mysterious malady and encourages detectives to take a deep dive into her past.

An investigation into the murder of a military hero tests the bonds of military camaraderie and unravels a myriad of secrets, lies and hidden identities.

After responding to a robbery at a sporting goods store on Christmas Eve, an Irving, Texas police officer is gunned down in cold blood.

Dayton, Ohio, is terrorized over the Christmas holiday as a string of brutal shootings have the residents wondering if they could be next.

A case pits father against son, husband against wife and brother against brother.

A case pits father against son, husband against wife and brother against brother.

A teenage mom and her friends get caught up in a bizarre murder case.

After a night out with good friends in Minneapolis, one of them disappears; days later, when human remains are discovered, investigators travel a chilling path to catch a killer before another night ends in murder.

A night of Christmas Eve merriment in the Louisiana bayou ends in murder when one of a local bar's most beloved sons is found in a pool of his own blood.

An ambush on an armored truck ends in a shootout and cold-blooded murder of two guards; detectives investigate a possible inside job and string of violent casino robberies while tracking down elusive suspects.

Boulder City detectives struggle to identify a mutilated body found partially buried in the desert; a grieving mother and puzzled investigators look for answers until police reveal a malicious motive inspired by the silver screen.

When a woman's charred remains are discovered in the trunk of a burning car, Metro detectives scour a desert crime scene before evidence leads them to a complex world of competitive bodybuilding, jealousy and betrayal.

A bomb explodes at the Luxor casino, killing an employee and sparking fears of a terrorist attack; investigators piece together surveillance video of the blast and hunt for a bombmaker on the loose, eventually revealing a threat much closer to home.

An expert poker player is found beaten to death in an Imperial Palace stairwell, leading detectives to investigate a mysterious phone call and hours of surveillance footage; hotel staff help police crack the case and track down a killer.

On Christmas Eve in a quiet town, elderly couple Bob and Idella Young are brutally slain at home; a bloody glove found at the crime scene has the killer's DNA, but no one matches the sample.

A holiday is ruined when a couple is gunned down in their bed during what looks like a brutal home invasion, but police soon discover the true motive for the double homicide is a shocking tale of deception and betrayal.

For the Jennings family, Christmas Eve becomes a waking nightmare after a gunshot rings out, and investigators must determine whether a secret led to suicide or murder.

Sandra and Jamie Melgar are high school sweethearts who are celebrating their 32nd anniversary, but the intimate evening turns deadly; to crack the case, investigators must uncover the secrets of an illusion that is worthy of the great Houdini.

She was a dancer who married a dashing photographer; they seemed to have the picture-perfect life -- until the bone-chilling night she disappeared; in a case filled with twists, could the victim help solve her own murder.

Devoted to her faith and her five children, Chanin Starbuck deals with her divorce and tries to start a new life; after she is brutally murdered, the investigation reveals secrets.

When a U.S. Air Force Airman is shot multiple times inside his garage, a trail of clues leads Las Vegas detectives to a secret love affair and a murderous plan.

The case involved detective work so unique, it managed to stay with Dennis Murphy for years; days before Christmas, Michelle Martinko was visiting the mall when she was found stabbed to death; investigators found her killer almost 40 years later.

When Kim Dorsey was found murdered in her bedroom, the chaotic crime scene left more questions than answers; a single out-of-place item would be the key to discovering the killer's identity if investigators could find the evidence.

Ashlea Harris has no shortage of admirers, so when she is found dead after a suspicious fire consumes her apartment, police are baffled; the fire is no accident but the clues to who killed Ashlea may be up in smoke.

When a young mother is murdered during Christmas, investigators uncover a love triangle that shocks her family and forever robs them of their holiday cheer.

Beloved Christmas tree farmers are executed in the front seat of their car and a manhunt for their killer is launched that keeps investigators on the case for over three decades before justice is served.

When a graduate student is shot dead outside of her North Carolina home, a 911 caller leads detectives to believe the victim's fiance is the key to solving the case.

When a graduate student is shot dead outside of her North Carolina home, a 911 caller leads detectives to believe the victim's fiance is the key to solving the case.

A mother of two mysteriously dies in a minor fender bender and investigators learn that her marriage is what should be investigated not the accident.