Kay Mortensen took pride in preparing for every possible threat, so when he was found dead at home, those who knew him were stunned; the brutal killing put two of Kay's loved ones behind bars and in danger, but the truth may set them free.

Jodi Arias is convicted of murdering her ex-boyfriend, Travis Alexander.

In an effort to uncover the truth, a group of Detroiters band together to clear the names of Tommy and Ray Hughes who have spent 25 years in prison for a murder they say they did not commit.

Prosecutor Kelly Siegler and her co-counsel unravel the mysterious hit-style murder of young suburban mom Farah Fratta; to prove the suspect masterminded her murder, Kelly demonstrates how the killer used his church and children as an alibi.

When an elderly woman survives an attempted murder, investigators connect the dots on the deaths of other local senior citizens where families reported missing jewelry, leading to the hunt for a serial killer in Texas.

Driving home from a night out at a club, a nurse's aide strikes a homeless man on the freeway. The choices she makes after the crash, and her attempt to keep them a secret, are revealed when friends testify against her in a dramatic trial.

Two unlikely lovers form a secret bond held together by faith, but the polygamous marriage ends when a manipulative and deceitful charlatan kills the woman he once loved, the young mother of his two sons.

As a loving Oklahoma family embarks on a journey to understand the romantic relationship that led to a horrific murder, the relationship's secrets also reveal the killer responsible for two other murders from a years-old cold case.

A charismatic young woman meets a dynamic and handsome man at an Orlando nightclub, and it seems like a perfect match, but a secret marriage and a lover who just can't let go spells doom for two innocent victims.

A grad student is killed in her Rittenhouse Square apartment; detectives follow clues across the country, uncovering a hidden evil that changes how Philadelphia investigates sex crimes.

When a college student and exotic dancer is found dead after being thrown from a bridge, detectives investigate the controversial players in Rachel's double life and come up with a killer they never imagined.

NYPD detectives race to unravel the strange murder of one of their own before a devious killer slips out of the country.

An indie film star is found dead in Greenwich Village, the victim of an apparent suicide; as detectives discover one eerie clue after another, they realize things aren't what they seem.

Authorities are left stunned when stories of mysticism and conspiracy come to the front while they investigate the disturbing murders of an elderly Vietnamese couple in Texas.

Wilton Manors, Fla., investigators search for motives after a beloved father is found strangled and battered in his driveway, until an unsuspected confession reveals a complex web of deceit.

A bullet-riddled car, a missing driver, and no witnesses, an ambush or a random attack; the clue was something so tiny, it was measured in millionths of a meter.

Teenager is found half-naked with her throat slit; a single foreign hair found on her thumb may finger the killer.

Two women who lived in the same apartment complex were brutally murdered; the similarities of the crime scenes led police to believe they were dealing with a serial killer who hated women, and they had to find him before he struck again.

Weeks after a student vanishes, the body of an unknown female is found in the ashes of a fire 700 miles away; an alert policeman realizes the crimes could be connected.

Investigators face a growing list of suspects after a beautiful flight attendant is brutally murdered in her own home.

The assistant manager of the restaurant had been stabbed to death; police knew why he'd been killed: $8,000 was missing from the safe. As to who was responsible, his family and friends couldn't even imagine who'd want to hurt him.

Florida authorities rely on DNA evidence to try to nail the killer of a woman who was abducted from her late-night job at a convenience store, raped and strangled.

A wild fire in a secluded parking lot leads police to discover a dreadful homicide, with the suspect's image caught by security cameras.

After a prominent Arizona surgeon is found stabbed to death outside his office, investigators uncover an unlikely suspect with deep pockets and an even deeper hatred for the doctor.

Police don't have a basis for comparison to match shoe impressions, blood drops and DNA evidence from a murder scene.

A masked gunman kills two members of a family and wounds two others after they interrupt his burglary at their upscale suburban home.

A killer leaves equally incriminating evidence at the scene when he meticulously wipes away his fingerprint and shoe impressions.

After a woman is found dead at a yacht club in California in an apparent case of love gone wrong, investigators discover her home life was as dramatic as films made in nearby Hollywood.

The brutal murder of a state park employee over $2,000 rattles her co-workers and tourists while leaving police to sift through hundreds of leads.

Diving inside the mind of New York's most prolific serial killer, Joel Rifkin; through never-before-heard interviews from Attica Correctional Facility, Joel Rifkin reveals exclusive insights into the mind of a monster.

The missing-persons case of 12-year-old Jonelle Matthews in Colorado remains a mystery for more than three decades until detectives narrow in on a suspect whose bizarre behavior after her disappearance hints at something much more sinister.

The missing-persons case of 12-year-old Jonelle Matthews in Colorado remains a mystery for more than three decades until detectives narrow in on a suspect whose bizarre behavior after her disappearance hints at something much more sinister.

A woman is found murdered in the remains of a house that has burned to the ground, and it will take years to unravel the mystery of what happened to her.

Exploring the reign of the Southside Slayer and the truth; the Southside Slayer wasn't one man, but four separate serial killers operating at the same time in the same place.

Officers must determine if there is more than one killer at the same time when dozens of women are murdered around the city of Baton Rouge, La.

A killer is behind bars after DNA connects him to seven victims in Baton Rouge, La., but the murders don't stop after his arrest; new fear sweeps the city and law enforcement must act quickly to find a second, and maybe even a third, serial killer.

Retired Detective Ken Mains teams up with an inmate on death row to expose the secrets of unknown serial killer Joseph Naso: while bringing closure to a victim's family, Ken uncovers that Naso likely killed many more women than police ever thought.

Retired detective Ken Mains and inmate Bill Noguera uncover new details about serial killer Joseph Naso, who posed as a pro baseball team's photographer to hunt women and may have gone on a killing spree in Sin City.

Bill Noguera gets a written confession from serial killer Joseph Naso, cracking open another cold case from his list of 10; Detective Mains uncovers more potential victims from an infamous case in New York.

A young mother who is pregnant with her second child is gunned down on her way to work; her sisters become amateur detectives to help find her killer.

Pizza deliveryman Brian Wells robs a bank with a bomb strapped around his neck, launching one of the strangest cases ever investigated by the FBI.

A bank executive tries to rob his own bank; investigators think it's an inside job but eventually learn the crime is connected to a spree carried out by men who managed to keep their identities secret, preying on people who did the opposite.

Single mother Marie Singleton falls hard for Andre Jackson, a single dad raising his two kids; the couple marries and seems happy, then Marie vanishes and investigators discover secrets that may be related to her undercover job.

Raven Abaroa swoops into Vanessa Pond's life and steals her heart; then, Vanessa discovers her dream man has a tragic past: his first wife was killed; dark secrets are about to be spilled.

Wendy Trapaga is a beaming young bride, and just four days after saying "I do," she is found dead in a parking lot; investigators discover the newlyweds were keeping secrets, and there was also someone else involved with a secret.

In high school, Christian, Erika and Pedro formed a tight trio: best friends who excelled at academics and shared big dreams; when they went to college something changed; it started with a secret romance and ended in tragedy.

Nikki Whitehead was a single mom working toward a brighter future; she found love, moved into a nice neighborhood and enrolled in college, then tragedy struck; police searched for answers but one thing was certain: this crime was personal.

A cold-blooded serial killer lurks in the woods, stalking for his next victim; as Detective Bernie Nelson investigates, puzzling evidence leads him to more questions until one clue help crack the case wide open.

When Cara Ryan shoots her ex-husband and accuses him of threatening to kill her, police question her motive.

When Cara Ryan shoots her ex-husband and accuses him of threatening to kill her, police question her motive.

A trail of texts helps prosecutors build a case in the disappearance of Kevin Mengel, but a surprise awaits them.

A land developer disappears into the Arizona desert, and a brother sets out to uncover the truth; when hikers stumble onto a gruesome discovery, investigators quickly realize no one can be trusted when they find themselves in the line of fire.

A horrific discovery in a backyard cornfield is just the beginning of an unspeakable scene; as horrors unfold in this small Midwest town, someone is playing a deadly game of cat and mouse, and it will be years before a ghastly truth is revealed.

After the burned body of a local man is found in rural Missouri, the homicide goes unsolved for nearly two decades until a twisted murder plot is brought to light.

Investigators in Gresham, Ore., are left with a gruesome crime scene, an assailant on the loose and a missing child after the victim of a stabbing is able to call 911 in a last attempt to save her own life.

When a prominent Santa Rosa, Calif., couple is found gunned down at the offices of one of the world's most popular cartoons, detectives are left to untangle the inner workings of a decades-long marriage.

A frantic 911 call captures a man's final moments after a brutal knife attack in his home. As their only eyewitness keeps changing her story, investigators dig deep to uncover a crumbling relationship and the sinister truth behind a vicious murder.

The quintessential girl next door is discovered brutally killed on Thanksgiving weekend; it would take investigators over a year to uncover the dark obsession that led to her murder.

A foursome, a stripper, and a biker, is just the beginning for investigators of this massage table homicide; everyone is shocked as a secret fetish for murder is revealed.

A single mother is found shot and stabbed in her kitchen; multiple suspects emerge, but the true mastermind of this murder hits closer to home than anyone expected.

What started as a perfect marriage evolves into a threesome; after one of the participants winds up dead, the killer turns out to be someone the investigators never suspected.

Kelly and Abbey investigate the 1999 murder of a beloved churchgoing mother and grandmother, shot dead in her own home; with no known enemies, was she killed to send a cruel message to someone she loved?

Kelly and Tonya look into the murder of a hard-working mother who was stabbed and bludgeoned to death; the investigation uncovers a secret affair and a revelation as shocking as the murder itself.

Kelly and Steve join the Searcy Police Department to untangle the mystery of a popular hairstylist, murdered on the night of her thirtieth birthday; is it an old flame, a new boyfriend or someone else entirely?

Kelly and Steve investigate the mysterious murder of a devoted mother of four, found stabbed to death in her van with her wedding band on the floor; was an alleged secret affair behind the shocking crime?

A 49-year-old man was shot and killed while walking his dog in front of his Texas home. Josh Mankiewicz looks back at a case with an unusual motive.

A man with both power and prestige managed to fool everyone, right up until his arrest.

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 Israel Keyes is caught for the murder of 18-year-old Samantha Koenig, police have no clue what they've stumbled upon; after intense games of cat and mouse, the FBI uncovers one of the most calculated serial killers it has ever encountered.

A mother of three married to a missionary is found dead on Valentine's Day; the investigation into the murder reveals answers close to home.

A mother of three married to a missionary is found dead on Valentine's Day; the investigation into the murder reveals answers close to home.

A young man is crushed by a truck in his father's driveway, leading police to first rule the death as an accident; the case is re-examined.

Family members desperately search for a missing Virginia teenager, not knowing police have a secret: they've discovered his body but refuse to release any info as they untangle an extraordinary motive.

Police search for an odd-looking gunman seen fleeing after shooting a young mom to death, and uncover a suspect who's not what they expect-with a motive that's impossible to comprehend.

After a young woman is found dead in a Texas lake, investigators hunt down a killer on the run.

A beloved chef and cooking instructor is found shot to death at work, and investigators are left baffled; but when a loved one's strange behavior draws their attention, detectives discover the killer has been right in front of their eyes.

An ailing man isn't seen for weeks, and his family and friends grow concerned; when his wife is confronted about her changing stories, her revelation shocks the community, and everyone who knows and loves her as a dedicated grandmother.

A Florida woman is shot in her vacation rental, and the hunt for her killer connects back to a murdered Minnesota farmer; clues point to a doting grandmother living a double life, who then leads authorities on a multi-state chase.

When an officer discovers a man dumping bags of more than 60 body parts into the Passaic River in East Rutherford, N.J., investigators work to identify the victim and corroborate the chilling story of a confessed killer.

A picture-perfect Navy family is shattered when the father is found shot to death after returning home from deployment; detectives are led to believe the crime is a tragic coincidence until a dark plan devised from lust and greed comes to light.

When a father in Spokane, Wash., is found shot to death in his vehicle, detectives work for years to unmask a vicious killer who isn't afraid to silence witnesses; they eventually uncover a long-kept family secret that breaks the case wide open.

After an Air Force recruiter is found dead in a ditch near his Ohio home, authorities chase down several leads until the case culminates with a sting operation worthy of an international spy drama.

After gunshots ring out in rural New Jersey, police discover a beloved father shot to death and a vehicle taken from the premises; investigators must determine if this is a random act of violence or a murder plot spun from an ongoing dispute.

After a local antique shop owner is murdered in a seemingly random home invasion, North Carolina police discover there is more to the story when a web of lies and infidelity are revealed.

A frantic 911 call captures a man's final moments after a brutal knife attack in his home. As their only eyewitness keeps changing her story, investigators dig deep to uncover a crumbling relationship and the sinister truth behind a vicious murder.

An entrepreneur forges an unlikely friendship with a ragtag group of skateboarders; but when he vanishes and signs point to foul play, police wonder whether he was really a friend or a target.

A cowboy more at ease with horses than people vanishes into the desert after running into a group of California ranchers who believe he's done them wrong.

When a rebellious teen disappears on her way to a concert, clues point detectives to dark rituals deep in the forest.

When a woman drowns in her tub, police think a recent purported suicide attempt holds the answer; but two years later when her husband confesses to the murder of his second wife, the cause of the first wife's death comes into question.

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

When a 71-year-old man is found shot dead in a field, investigators suspect his killing is the result of a robbery; as new evidence surfaces, detectives develop a theory to explain his death and only a voice from the grave can prove it.

A father in Orange County, Calif. finds a young woman's slain body in his son's apartment and calls the police; he seeks his son and answers; the investigation uncovers an unexpected plot.

When police respond to a domestic disturbance in a Bay Area suburb, it's unclear who on scene was the intended victim; further investigation reveals a body, a carefully collected kill kit, and a slew of evidence of a lethal plan for revenge.

Rachel Buffett, whose former fiance, Daniel Wozniak, was convicted of two grisly murders, talks about being at the center of the investigation.

Rachel Buffett, whose former fiance, Daniel Wozniak, was convicted of two grisly murders, talks about being at the center of the investigation.

A couple's romance on Nantucket Island turns tragic.

A husband gives a frantic call to 911 after finding his wife dead in a bathtub, but the couple's daughters lead police to investigate their father.

Karen Smith is murdered while her 5-year-old son is brutally stabbed and a neighbor says she knows who did it; she later recants her testimony and fights for the suspect's defense.

Decades after Susan Smith confessed to drowning her two small sons in South Carolina, she advocates for parole. Her ex-husband speaks out, arguing that Susan should remain behind bars for the notorious murder of their children.

When a missing young mother turns up murdered on the outskirts of New York City, it confirms a close-knit family's worst fears; the investigation is hindered by a series of lies, before a secret affair is uncovered, turning brothers into adversaries.

A woman is found stabbed to death in her own home; when police learn of her husband's brutal family history, a matriarch bludgeoned with an axe, an incestuous affair, and a vicious inheritance battle, they need to find out if there's a connection.

A retired police officer fears his missing daughter has been murdered, kickstarting an investigation where the killer appears to be one step ahead; a pair of twins hold a secret that threatens to tear apart their close bond.

An affluent family at war with each other for over a decade, find themselves at the center of a murder investigation when a beloved uncle is found dead. Police unravel a conspiracy involving a wayward son and a counterfeit secret agent.

A young mother's disappearance sparks a bitter division among those she leaves behind; as the infighting intensifies, detectives scramble to find out what happened to her, only to discover that a conspiracy to kill is fresh underway.

A gruesome Thanksgiving triple murder case lays bare a family's violent past, including a son and daughter each with a score to settle; as the years pass and the case goes unsolved, three families desperately fight for the truth and justice.

An unusual 911 call leaves investigators sorting fact from fiction in the search for a missing mother; while police begin to expect the worst, an illicit affair at the heart of the victim's family reveals a daughter with something to hide.

A California mom of three vanishes, and her car is found by the side of a desolate road with a suspicious flat tire; the case goes cold for years until a new detective takes on the case and is determined to get answers.

A night out on Hollywood's notorious Sunset Strip leads to a desperate search when a teenage girl doesn't make it home; the search for answers weaves though the strange side of Los Angeles before the tragic truth is uncovered in the Hollywood Hills.

When a rebellious teen disappears on her way to a concert, clues point detectives to dark rituals deep in the forest.

A gruesome discovery is made at a construction site when a man is found buried beneath a newly installed septic tank.

Kelly and Steve team up with the Anderson County Sheriff's Office to solve the horrific quadruple homicide of a family on Halloween; their investigation reveals a family feud, a trail of stolen cash, and a bloody shoe print left by the killer.

The "Cold Justice" team and the Anderson County Sheriff's Office continue their investigation into the quadruple homicide of a family of four in an attempt to finally give answers and justice to their grieving family and community.

A gruesome discovery is made at a construction site when a man is found buried beneath a newly installed septic tank.

When police respond to a domestic disturbance in a Bay Area suburb, it's unclear who on scene was the intended victim; further investigation reveals a body, a carefully collected kill kit, and a slew of evidence of a lethal plan for revenge.

When an Atlanta-area horse trainer abruptly vanishes from his ranch, police search for the missing father-to-be; discovering a salacious secret where untamed passions may have led to the victim's untimely demise.

An African immigrant is found tortured and murdered in his West End home; Atlanta detectives uncover a string of violent crimes tied to a terrifying criminal syndicate that the team must take down to restore peace to the Big Peach.

Mysterious deaths occur inside a traveling commune, starting an investigation that lasts more than a decade; two sisters -- former commune members -- reveal stories that involve lies, lust and greed.

Mysterious deaths occur inside a traveling commune, starting an investigation that lasts more than a decade; two sisters -- former commune members -- reveal stories that involve lies, lust and greed.

Hollywood actress Aasha Davis' sister, Lesley, goes missing after a fight with her husband never to be heard from again.

Out with his fiance on Halloween, a man leaves a bar with the rowdy crowd behind him and is never seen again.

Investigators look for answers when a popular school superintendent is found dead in his western New York home.

Sabrina Zunich tells the story behind her foster mother's murder, describes the secrets that led to it, details why she snapped, and discusses how she feels about it now.

Serving a life sentence for a murder she claims she didn't commit, Teresa Kotomski talks on camera for the first time, sharing the intimate secrets of her rocky marriage and detailing what she now alleges caused her husband's painful poisoning death.

A retired nuclear physicist is reported missing and investigators discover he lived a reclusive life fueled by paranoia, but as detectives race to find him, they begin to wonder whether his fears were unfounded or if his worst nightmare came true.

A general store owner in Rusk, Texas, calls 911 and makes a harrowing confession, but as detectives dig deeper, they discover a disturbing pattern making them rethink the motivation behind the crime.

An early morning apartment fire in Fort Worth, Texas, sparks a murder investigation when a young woman's body is found beaten and bound inside; detectives quickly work to solve the case and uncover an elaborate plot fueled by revenge and greed.

When a beloved mother goes missing on her birthday, detectives are faced with several possible suspects before focusing on a co-worker with a shocking past who will do anything to hide their true identity.

After a small-town man is found shot to death at a Missouri roadside park, the evidence trail leads detectives further into the man's complicated past where they uncover a wicked plot that no one saw coming.

Police follow a lead in a missing persons investigation to a 115-acre farm, unearthing the site of a gruesome crime and a seductive killer that will go down in New Hampshire history.

A loving father agrees to give his ex-wife a chance to reconcile; when his loved ones can't reach him, an unexpected tip is brought to Oklahoma police that uncovers a toxic love triangle and horrific crime scene.

A frantic 911 call captures a man's final moments after a brutal knife attack in his home. As their only eyewitness keeps changing her story, investigators dig deep to uncover a crumbling relationship and the sinister truth behind a vicious murder.

When a retired Dauphin County sheriff is found burned to death, investigators zero in on his wife's bizarre behavior. They must quickly determine whether the death was the result of a mental health crisis or a malicious plan to kill.

A San Diego teacher and coach is gunned down on the street, leaving his students and fiancée shattered; detectives swiftly retrace the suspect's steps to prevent future violence, while unveiling a sick, obsession-fueled murder plot.

When a beloved family man dies in a house fire, his wife and children must grapple with his unexpected loss.

When a retired Dauphin County sheriff is found burned to death, investigators zero in on his wife's bizarre behavior. They must quickly determine whether the death was the result of a mental health crisis or a malicious plan to kill.

A San Diego teacher and coach is gunned down on the street, leaving his students and fiancée shattered; detectives swiftly retrace the suspect's steps to prevent future violence, while unveiling a sick, obsession-fueled murder plot.

The disappearance of a loving family in rural Arkansas leaves authorities searching for clues; a discovery puts them on the trail of ruthless killers driven by hate and revenge.

When a professional basketball star is gunned down in his hometown of Memphis, Tenn., the case goes cold for nearly a decade; after a new team of investigators takes over, it uncovers the missing murder weapon and a mastermind close to home court.

Years after a beloved father is accidentally shot in his home, the family matriarch mysteriously vanishes; as a second investigation launches, a shocking confession reveals a family secret about how far a son is willing to go for his mother.

A 911 call in an upscale neighborhood leads police to the bodies of a mother and daughter in what appears to be a murder-suicide; investigators discover a trail of deceit that exposes an unexpected killer.

A wife and mother survives an attack in her home and a shot to the head; authorities search for a motive.

A wife and mother survives an attack in her home and a shot to the head; authorities search for a motive.

When a young Army medic based at Ft. Bragg, N.C., goes missing, police can't solve the case despite having a suspect until an unorthodox private investigator steps in to help.

A restaurant is robbed and the night manager murdered, leading police to investigate suspicious co-workers, a disgruntled ex-employee and a violent serial attacker.

Detectives investigate a secret affair, a kidnapping plot and a racist gang when a young husband-to-be is found shot and stabbed.

In Wisconsin, a mother makes an unimaginable discovery following a cast party; suddenly, a close circle of friends is under suspicion for murder; as detectives work quickly to unravel this mystery, another vicious attack may lead them to the killer.

In Hamburg, N,Y., employees at the local Toys R Us are faced with the unthinkable when one of their own is savagely killed during an otherwise typical nightshift; suddenly, every co-worker is a suspect, but one may be masking as a murderer.

Investigators follow a surveillance trail to uncover the events that led to the death of an Arizona man, who is shot in his garage before he is able to read the results of a paternity test.

When a loving father is gunned down in upstate New York, a hunt for the gunman crosses state lines; as several suspects are brought in, investigators must determine who's telling the truth to reveal the mastermind.

A Texas woman discovers her husband's brutally stabbed body in their ransacked home and police suspect he was the victim of a robbery gone wrong, but the investigation reveals a torrid love affair.

After what appears to be a fatal road rage incident, authorities in Clifton, Ariz., follow a trail of recovered text messages that suggest this was no random attack, but instead a cold-blooded murder.

A prominent private investigator is reported missing after he fails to return from a business trip; when the case goes cold, a former Russian spy assists the FBI in a sting operation to uncover the truth behind his disappearance.

A secret affair between a woman and her church's pastor becomes public when they become suspects in a murder.

A college romance goes cold and ends with a murder that takes 22 years to solve.

A wife starts a New Year by ending her cheating husband's life.

A biology professor ends a faculty meeting with gunfire and reveals a surprising history of violence.

When a retired Dauphin County sheriff is found burned to death, investigators zero in on his wife's bizarre behavior. They must quickly determine whether the death was the result of a mental health crisis or a malicious plan to kill.

Two teen girls are brutally murdered and one of their best friends could be responsible.

A wife claims an intruder killed her husband, but the real mystery turns out to be the couple's secret lives.

A woman confesses to her husband's unsolved murder.

A woman complains about her ex-husband, but her venting has deadly consequences.

A gruesome discovery is made at a construction site when a man is found buried beneath a newly installed septic tank.

A San Diego teacher and coach is gunned down on the street, leaving his students and fiancée shattered; detectives swiftly retrace the suspect's steps to prevent future violence, while unveiling a sick, obsession-fueled murder plot.

When a hospital employee dies mysteriously on a Center City sidewalk, detectives uncover surveillance footage of the murder that leads straight to the doorstep of a suspected serial killer who may be tied to a string of unsolved crimes.

A father in Hawaii tackles setback after setback in his fight for justice for his murdered daughter.

The friends of a father from Georgia accused of murdering his ex-wife come together to prove he is innocent, while prosecutors count on his young children to testify against him.

A teenager is convicted of encouraging her boyfriend to kill himself; exclusive interviews with those on both sides of the case.

A woman is found dead in an elevator, but her murder is just the beginning; as Barbara Butcher retraces the chain of evidence, she uncovers a domino effect of violence that leaves a trail of bodies across the Bronx.

When an unknown body surfaces in the icy East River, Barbara Butcher joins detectives in a race to reconstruct the victim's identity using the few fragile clues left behind; pressure mounts when a report comes in that there may be more victims.

In 2012, a tight-knit Las Vegas neighborhood is shattered by the murder of a mother and daughter in their home; investigators must analyze a crime scene soaked in rage to help stop a killer before they strike again.

When a garbage bag containing a young woman's body is dumped in a NYC tunnel, Barbara Butcher and a rookie homicide detective unravel how a seemingly straightforward crime conceals a chain of forensic contradictions, and a killer no one saw coming.

Buried in the desert lies more than just a body, but a legacy that rides the line of love and hate; Barbara Butcher investigates a murder, where the motive festers across generations before exploding into violence.

A cherished grandmother is found murdered in her Bronx apartment; Barbara Butcher returns to the scene to retrace every step - and decode how the victim's body holds clues to a carefully hidden motive.

Barbara Butcher steps back into the 1997 murder of Jonathan Levin, a beloved Bronx teacher, and reveals how her inestigation withstood intense scrutiny and helped detectives uncover a truth more disturbing than anyone could imagine.

A missing man's search ends with a morbid discovery: his body, bound and murdered, inside his own car; the brutality is unmistakable, and to Barbara Butcher, so is the staging; a closer look at the evidence reveals a calculated plot to kill.

When suitcases of dismembered remains wash ashore in Virginia Beach, the investigation leads back to New Jersey, where a facade of a perfect family man breaks to reveal the reality.

When a fearless Las Vegas journalist is ambushed outside his home, the surveillance video shocks the city; the body tells a deeper story, one that may reveal what the camera missed.

An old flame comes back to rekindle a romance and ends up charged with murder and arson.

A woman is the target of three murder attempts, and her husband and his lover point fingers at each other.

When evidence shows a woman's rape and murder, police must find the killer as well as the victim.

A week after a couple disappears from the beach, police get a mysterious lead from a robbery.

Fifteen years later, DNA technology leads to justice for a murdered woman and her savagely beaten 4-year-old daughter.

A quiet waitress who hasn't been to work in two days vanishes without a trace; police suspect a date gone wrong.

The search for a missing exotic dancer led police to an isolated 75-acre site where someone had been shot and cremated, thus destroying all evidence... almost; piece of a foot provided enough DNA for a genetic profile and positive ID.

When a man perishes in a fire while working in his garage, his death is initially ruled an accident until a forensic odontologist changes the direction of the case.

Lack of evidence compels investigators to look beyond the obvious when a woman is beaten to death at her in-laws house.

A man is found dead of an apparent suicide. But soon after, information emerges which reveals a much more menacing scenario.

A dismembered body is dumped on the side of the New Jersey Turnpike and before police realize it, bodies are turning up between two states.

A young bride-to-be is gunned down in her own home. The attack is personal and as investigators start digging, they uncover the man she loved was living a lie.

Tara Munsey went missing after a work shift at a Virginia restaurant and it is unknown if she ran away or if she was the victim of foul play.

An Ohio woman and her two daughters go missing while vacationing in Florida; their corpses are found floating in Tampa Bay with a handwritten note by one of the victims; putting it on five billboards helps them find the killer.

Four young adults are murdered in an affluent Texas neighborhood, with little evidence but two people walking by dressed in black.

A young college student is found dead in her apartment and the autopsy rules the death a homicide by an unknown male suspect.

Although a man claims he accidentally shot himself, the crime scene does not corroborate his story, and a love triangle unfolds.

Police suspect a mother of two has relapsed into drugs when she disappears, but her family and friend suspect foul play.

Intruders break into a family's home.

Intruders break into a family's home.

Years after the kidnapping of Amanda Lindhout, secret agents put a daring undercover sting into action.

A documentary filmmaker sets out to tell the story of the biggest serial killer case in California history and uncovers a terrifying tale that begins with the disappearance of Paul Cosner.

Natalee Holloway disappears from Aruba in May 2005, and her father Dave never stops looking for her; he receives a new lead that could be the key to solving the 12-year-old mystery, but he has suspicions about the source.

Dave Holloway and a team of investigators pursue a lead that may shed light on his daughter's disappearance, with the goal of obtaining a taped confession and concrete evidence.

The sting operation in New Orleans continues as the investigation team begins running out of time to obtain the necessary information from the co-conspirator.

TJ and his team head to Aruba to begin phase two of their investigation - attempting to obtain DNA evidence from Natalee's alleged burial site; Dave must convince his informant to go the extra mile.

TJ races to the location where the co-conspirator claims he dug up Natalee's remains in 2010; working with the Aruban authorities, they search for DNA that could lead to convicting those involved in Natalee's disappearance.

After two years following a lead, the investigators finally have evidence in hand that could answer the 12-year-old mystery of what happened to Natalee Holloway.

In 1990, twin sisters Dannette and Jeannette Millbrook disappear in Augusta, Ga.; law enforcement dismisses the girls as runaways; former prosecutor Laura Coates and retired detective Page Reynolds now examine the case in search for justice.

Vince Goslyn's military career was thriving and he had built a beautiful family; one night, the father of five was gunned down.

Amber Belken, a young woman with big dreams, is found murdered; three people know the truth if Amber was the victim of a robbery gone wrong or if the brutal crime was personal.

When Debbie Hawk vanishes, her friends and family are left searching for answers; investigators discover that Debbie was planning to divulge secrets and wonder if she has been silenced as a result.

Sandi Johnson, who always put her kids first, vanishes without a word; police discover dark secrets in Sandi's marriage and several men in her life.

After college student Angie Samota was stabbed to death, police had no shortage of suspects; a crucial clue narrowed their list to one name, but it would be years before technology and a tenacious friend came together to help unravel this mystery.

Before she disappeared, Heather Elvis was a young woman who was eager to make her mark on the world; investigators discover a lover triangle and think they have their motive.

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.

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.

Brett and Vashti are high school sweethearts who are now busy raising two boys; then a fire rips through their home; in the ashes, investigators find a mystery; what happened that night was no accident.

Days after Lauren Giddings vanished, her body was discovered steps from her apartment; to catch her killer, detectives had to untangle a confusing web of clues and find a piece of evidence no one was supposed to see.

As a murder victim's sisters dedicate themselves to finding the killer, an unexpected source turns the case upside down.

As a murder victim's sisters dedicate themselves to finding the killer, an unexpected source turns the case upside down.

Former DEA agent Andrew Hogan details his search for Mexican drug lord Joaquín "El Chapo" Guzmán with never-before-seen videos and photographs.

A beloved Missouri couple is thought to be swept away in a record-breaking deadly storm, but when a closer look at the family farm points to foul play, law enforcement searches for clues long since washed away.

When a Michigan mother disappears on an afternoon walk, investigators pin all hope on their sole eyewitness: a 10-year-old boy who may have witnessed the unthinkable.

When a successful Arizona businesswoman disappears on a holiday shopping trip, investigators hunt for a kidnapper; when the killer takes his secrets to the grave, however, the only chance of finding her is a psychic's mysterious vision.

A young couple sets out from a holiday visit but never makes it home as law enforcement search dangerous terrain fraught with derelict silver mines.

A spunky grandmother and former bail bondswoman is a no-show at work, leaving friends and family desperate for answers. As investigators focus on felons from her former career, they soon discover she may not be the only one missing.

When a California mother wakes to find the door wide open and her daughter missing, law enforcement travel the country to find her until they discover a dark plot that began at the teen's doorstep.

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 well-respected firefighter and loving family man is found gunned down outside his Philadelphia home, sending police on a furious search for his killers; what they find stuns even the most hardened investigators among them.

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 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.

The team digs into the 1983 murder of a dedicated mother of six, stabbed in an apparent carjacking; clues at the scene hint that a dangerous man from her past may be responsible.

Kelly and Steve travel to Montana to investigate the famous case of a young Indigenous woman who vanished after a night out; analyzing surveillance video and her social media posts could finally bring justice to her community.

Kelly and the team help the Lake Station Police department look into the 2007 slaying of a kind-hearted WWII veteran killed with a sledgehammer; tracing the purchases on his stolen credit card may be the key to solving the case.

The team helps the Abilene Police Department investigate the heartbreaking double homicide of a devoted mother and her young daughter strangled in their home; DNA evidence left at the scene might help identify their killer.