An irrigation canal murder remains unsolved until a similar murder occurs.

The light of day and DNA picture painted by molecular biologist reveals new clues about a nighttime traffic accident.

Investigative journalist Beth Karas follows Sam Little, a prolific U.S. serial killer who confessed to murdering more than 90 women in 17 states, in hopes of figuring out how he got away with murder for so long.

A killer crisscrosses the Midwest leaving a string of victims along the interstate, but when he realizes investigators are hot on his trail the murderer suddenly changes his mark.

The murder of a young businessman in Old San Juan, Puerto Rico, marks the start of a 15-year-long hunt to find the killer.

The murder of a young businessman in Old San Juan, Puerto Rico, marks the start of a 15-year-long hunt to find the killer.

Byron Smith claims he shot two teenagers in self-defense when they broke into his home on Thanksgiving Day, but investigators suspect there's more to his story.

A young girl beaten after watching her grandmother killed, identifies the wrong person; years later she tries to change her statement.

In 1984 police failed to convict the murderer of a college student. New technology may finally help the police to catch her killer.

The youngest son of a church-going family man finally learns the truth about his father when the man's second wife is found dead in their hot tub, and police look back at the suspicious drowning death of his first wife.

When a high school student mysteriously vanishes, police must sort through the whispers, lies and deeply personal secrets of a group of teenagers in a small Michigan town to unearth the deadly truth.

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.

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.

After a decadeslong crime spree terrorizes California, a DNA breakthrough leads detectives to a suspect in one of the most famous cases in history; Stephanie Gosk and detective Paul Holes trace the life of suspect Joe DeAngelo.

Jodi Arias' murder trial captivates the nation, exposing her secrets; however, the trial fails to solve the mystery of who this woman is behind her veil of lies.

Kay Mortensen takes pride in preparing for every possible threat, then he is found murdered, and two of his loved ones wind up behind bars.

Beauty queen Nona Dirksmeyer plans a future with the boyfriend she adores, then she is brutally killed; the crime shakes her hometown and exposes someone with a secret past.

Fire chief Keith Bryan is shot dead in his home, leaving police to wonder who would want to slay the local hero.

Annie Kasprzak has a second chance at a happy life after being adopted by her case worker; then, the 15-year-old vanishes; her parents find a note in her room that reveals a secret Annie has been hiding.

A quiet night is shattered when intruders terrorize a Florida couple and their young son, killing one of them; investigators question the initial story; a tip leads them to another family with dark secrets, and that's when bonds are tested.

It's Friday the 13th and something sinister is about to happen: a chilling double murder in an upscale home; the evidence seems to tell a clear story until investigators discover a marriage filled with secrets and a story that doesn't add up.

Deede Keller has a loving family, a tight circle of friends and a new man in her life; when she vanishes, disturbing clues point investigators to a suspect with a dark secret; the case provides a twist that leaves the courtroom astonished.

He dreams of being the next Steve Jobs, a young entrepreneur who wants to change the world; but his world comes crashing down one morning with four gunshots; this is a crime of passion: a fatal triangle involving a husband, a wife and a boss.

After a woman falls to her death while hiking with her husband in Rocky Mountain National Park, rangers question if her death was an accident.

Friend, grandfather, mall Santa, and landscaper Bruce McArthur, also known as Toronto's most prolific serial killer, is said to have buried his victims' body parts in the yards of his posh clientele.

A cold-blooded killer conceals his victims' bodies with trash, discarding them like garbage in the back alleyways of Los Angeles.

The Valseca siblings' lives are changed when their father is taken hostage in an orchestrated abduction.

The Valseca siblings' lives are changed when their father is taken hostage in an orchestrated abduction.

Years after a college student is murdered in her condo, calls to the police lead to the case being reopened and solved.

Police investigate a young woman found murdered two weeks after reporting a road rage incident; evidence leads not to the aggressive driver, but one of their own.

When a single mother is murdered, her brother vows to find the person responsible for the death of his sister - even if it takes more than 30 years.

A serial killer stalks and viciously attacks young women in the suburbs of London while evading British police; when the killer's ex-girlfriend reports him for abuse, little does she know just how pivotal her testimony will be in bringing justice.

A rescue mission of an abducted woman turns macabre when two dead women are found in the house; during the interrogation, the killer reveals the location of more bodies; his half sister discusses a dysfunctional childhood that shapes a serial killer.

A Canadian nurse walks into a rehabilitation center and confesses to murdering several of her patients; her childhood best friend reveals their lifelong common bond and the terrifying confession she made to him.

When human remains are discovered by road workers in West Virginia, a decades-old missing person's case is reopened and investigators are left to unravel an extensive history of scams and violence, leading them to a malicious con-woman.

A family demands answers when the body of an Arizona woman is discovered in a remote area of Texas; evidence left behind leads investigators to unravel a web of deceit until a shocking confession reveals the true mastermind.

When Texas authorities learn of a murder-for-hire plot against an acclaimed boxer, they must devise an undercover sting operation and race against the clock to save his life and expose the remorseless mastermind.

After a demolition derby driver is found gunned down in his California auto shop, police uncover a dangerous love match that leads one woman to commit the ultimate crime.

After responding to a frantic 911 call from a care-facility nurse who has discovered her patient with severe stab wounds and clinging to life, police receive an unexpected tip that reveals a group of killers inspired by greed.

When a captivating, sweet-natured single mom is found dead in her garage, detectives in Frisco, Texas, uncover a series of potential suspects, all of them connected in different ways to her complicated and secretive life.

Police believe a pair of double homicides in Nebraska, five years apart, might be connected; investigators working to solve the crimes fear the killer might strike again.

What happened in Cara Ryan's bedroom is a mystery; she admits she shot her ex-husband, but investigators need to know if it was murder or self-defense; detectives hear several versions of the story, but for a jury, there is only one truth.

A group of adventurous Americans think they found paradise in a tropical hideaway, the kind of place where people don't ask a lot of questions about their neighbors, until some of those neighbors start to disappear.

Sam and Danielle Dreher appear to have a storybook marriage, but this ending was not happily ever after; when Sam is murdered, investigators discover a twisted tale of secrets, lies and infidelity.

Meghan Verikas is attracted to Leon Jacob, in part, because as a doctor he saves lives; police officers tell her he is trying to hire a hit man, potentially to take hers, but authorities have a plan of their own.

Former FBI Special Agent John Douglas and psychiatrist Louis Schlesinger take a deep dive into serial killer Edmund Kemper's troubled history, intellect and evolution; the groundbreaking FBI work that led to breakthroughs in catching serial killers.

A Houston killer taunts the media and authorities as he uses homemade ligatures to murder his victims.

When an Iowa woman is attacked while home alone with her three children, the confrontation turns deadly.

When an Iowa woman is attacked while home alone with her three children, the confrontation turns deadly.

The investigation into a newlywed's disappearance focuses on her job as a CIA employee as a possible clue.

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.

With the discovery of Leonard Lake's cabin, investigators find the hidden cell where Lake kept his victims; they also unearth Lake's recorded manifesto, which details his depraved plans for Operation Miranda.

An international manhunt ensues when Leonard Lake's accomplice, Charles Ng, flees the country; the victims' families, including Paul Cosner's sister, fight to bring Ng to justice and answer for the crimes he committed with Lake.

The headline-grabbing murder of fashion icon Gianni Versace sent detectives into a tireless chase for a serial killer; expert insights on the mind of Andrew Cunanan, and a deep dive by forensic and legal specialists.

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.

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.

When a beloved father and driven entrepreneur is fatally shot at a busy California intersection, authorities discover a recent business venture that led one partnership to turn deadly.

After the body of a young San Antonio man is found dumped in a local cemetery, investigators retrace the victim's steps to untangle a web of deceit that begins with a heartless woman.

Coastal Texas is thrown into shock when a beloved retiree is found executed in his home; an unlikely witness comes forward and leads investigators to uncover a malicious murder plot.

The abduction and murder of a pregnant woman and her fiancé from their Decatur home sends shockwaves throughout Atlanta; ransom calls and voicemails turn into digital breadcrumbs for investigators to track the killers down.

A doting husband and father mysteriously disappears from his rural town just outside Atlanta; when his body is discovered stabbed and bludgeoned to death in the woods, detectives uncover evidence of a love triangle that led to a conspiracy.

When a young entrepreneur is shot and dumped in a rural well outside Atlanta, detectives search frantically for clues as to who committed the horrific murder.

When a sibling dispute over money turns into a double murder, all of Brooklyn is on alert for the missing killer; days turn into months and then years, as the NYPD manhunt turns into a national and international chase for the fugitive.

In one of the largest and longest manhunts in the United States, authorities finally identify the Green River Killer; it's a cat-and-mouse game, as investigators try to get inside his mind, so he'll lead them to the remains of other missing women.

El Paso investigators race to track down a ruthless killer who is burying his victims in shallow desert graves, dead or alive.

When hikers find a 21-year-old UCLA student's body in a Los Angeles-area train tunnel, detectives wonder if Ron's interest in an alternative religion is connected to his murder.

When hikers find a 21-year-old UCLA student's body in a Los Angeles-area train tunnel, detectives wonder if Ron's interest in an alternative religion is connected to his murder.

Terrorism is suspected when a woman's truck explodes outside of the daycare center where she works.

Detectives look into a couple's complicated past when a man finds his wife stabbed to death in their home.

A young woman is found dead in an empty warehouse parking lot Miami - just four days after her wedding.

East Cleveland is shattered when the bodies of 11 murdered women are found in a house of horrors; as the crimes become public, the killer's sister faces death threats and reminders of a childhood spent with a young man turned monster.

A young couple becomes the target of a nationwide manhunt after police connect the deadly lovers to two grisly murders in different states.

A horrific killing spree leads Pennsylvania investigators on the hunt for two young lovers willing to do whatever it takes to evade the law.

NYPD detectives hunt for the killer who tortured and executed a beloved New York City public school teacher; they discover the victim is the son of a powerful businessman.

Two young women are sexually assaulted and strangled five years apart but connected by the same unknown DNA; after both cases turn cold, the New York Police Department and New York State Police combine forces 17 years later to find the killer.

When a Ukrainian immigrant goes missing in Brighton Beach, a team of law enforcement's best agents from the New York Police Department, U.S. Attorney's office and FBI team up to find out what happened.

When world champion boxer Vernon Forrest is gunned down in cold blood, all hands are on deck to bring justice for the fallen Atlanta icon; APD detectives must figure out if this shooting was random or a result of the victim's celebrity status.

A wealthy couple is brutally attacked on their country estate just outside Atlanta; as detectives scour the property for leads, they discover a dark secret, unbeknownst to the community, that multiplies their suspect list tenfold.

When the body of an Atlanta police lieutenant is discovered floating in a lake and riddled with bullets, detectives work tirelessly to bring justice to their fallen comrade.

A woman in an exclusive Atlanta neighborhood is shot in her bedroom while calling 911; when detectives investigate the crime, they discover that her murder is related to an elaborate crime ring that upends the sense of safety in this tranquil hamlet.

The Atlanta club scene is shaken when the wife of a popular DJ is executed in her sleep; detectives must determine if the victim had any enemies or if her murder was part of a string of killings stemming from her husband's high-profile job.

The teenage nephew of Mayor Keisha Lance Bottoms is assassinated with a hail of bullets, wreaking havoc within his powerful family and the city of Atlanta.

After a young mother is shot to death in a hail of gunfire at her parents' suburban Atlanta estate, investigators uncover a bitter family feud between two dominant Georgia tycoons that may have ended in murder.

When a jeweler is executed in Midtown in broad daylight, detectives uncover the dark underbelly powering Manhattan's Diamond District. Zeroing in on the killer, a network of crooks, savagery and silence stands between the NYPD and the truth.

The sudden disappearance of a wealthy couple rattles their small town and launches an investigation that exposes a web of deception, greed and a blood-soaked betrayal.

When devoted girlfriends are murderously attacked in their Park Slope Brooklyn home, the NYPD doubts the surviving partner's story; these suspicions outrage members of the LGBTQ community who demand the real killer be found.

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.

Investigators in East Baton Rouge, La., hunt for a serial murderer who carefully carves up and cuts the bodies of his victims after death.

A romantic Mediterranean cruise intended to rekindle the love between a woman and her ex-husband leads to her vanishing.

A romantic Mediterranean cruise intended to rekindle the love between a woman and her ex-husband leads to her vanishing.

A teen is killed by a bullet during a party and his friend loses his freedom to what he says is a lie.

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.

Former mayor and prominent attorney Melvin Roberts is larger than life; when cops find him dead in his driveway, it marks the start of a tough case.

After getting away with murder for over three decades, one of the FBI's most wanted shocks investigators when he readily admits to five murders; his son discloses a family life on the run and his attempts to step out of an evil father's shadow.

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.

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

Self-named killer B.T.K. murders 10 people over 17 years, all while taunting Wichita, Kan., police and media before being exposed as family man and churchgoer Dennis Rader; in an exclusively acquired interview, he reveals what drove him to do it.

The murder of a beloved schoolteacher takes detectives from Kentucky to Florida, where an unexpected romance comes to light; as the investigation unfolds, relationships unravel, and a long con born of greed is unveiled.

A small town in Washington is rocked after a local man is found shot in his home; police wonder if his complicated love life played a role until a string of robberies exposes a dangerous couple with a more sinister motive.

After a young man is found shot to death on the banks of a Georgia river, investigators trace the murder back to individuals who share his Gothic lifestyle and uncover a romantic rivalry driven by manipulation.

When a shocking crime is committed in broad daylight that leaves a young man dead on the street, the investigation uncovers a personal vendetta. In exclusive prison interviews, the killer couple will each share their version of events.

Chillingconfessions from a vicious slasher detail only some of his 100+ victims. When he's set to bethe first serial killer everreleased from prison, an eyewitness from decades prior could force justice on the man whovowsto kill again.

Chillingconfessions from a vicious slasher detail only some of his 100+ victims. When he's set to bethe first serial killer everreleased from prison, an eyewitness from decades prior could force justice on the man whovowsto kill again.

After a young mother is shot to death in a hail of gunfire at her parents' suburban Atlanta estate, investigators uncover a bitter family feud between two dominant Georgia tycoons that may have ended in murder.

A young mother in the quiet Atlanta hamlet of Buford is found shot to death in what detectives deem to be a staged suicide; as investigators search for leads, they uncover an eerily similar death linked to someone with close ties to both victims.

A house fire in Louisville, Ky., sparks a murder investigation when detectives find two local men brutally stabbed to death; the search for the killer reveals a toxic romance between two lovers willing to risk it all to get what they desire.

An elderly veteran is nowhere to be found after his house suddenly bursts into flames in Tucson, Ariz., causing authorities to kickstart a nationwide manhunt to catch a desperate couple on the run not once, but twice.

Houston police search for a serial killer preying on young women until a local man's DNA finally reveals the culprit; upon his arrest, the killer's sister and daughter learn his true identity.

Chillingconfessions from a vicious slasher detail only some of his 100+ victims. When he's set to bethe first serial killer everreleased from prison, an eyewitness from decades prior could force justice on the man whovowsto kill again.

Convicted murderer Drew Peterson speaks out about the murder of his third wife and the disappearance of his fourth wife.

Convicted murderer Drew Peterson speaks out about the murder of his third wife and the disappearance of his fourth wife.

When Linda Curry sickens and dies under suspicious circumstances, police and doctors are puzzled, then her close friends and family members speak up.

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.

When an aspiring writer and painter in the vibrant Soho art scene of the early '80s is found murdered just two days after her debut book is published, her devastated husband offers a critical clue.

A single mother who is pregnant with her second child says goodnight to her 12-year-old daughter in their Brooklyn home at midnight; by morning, she is found dead miles away in the Hudson River of midtown Manhattan.

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.

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.

Rumors spread through a small town in Indiana after a well-known resident is found dead in his home after hosting a party; authorities investigate accusations from the partygoers to expose how a toxic love triangle turned deadly.

When an Iowa mother and her newborn son are reported missing, police race against time to rescue the pair and stop a maniacal woman from enacting a dangerous plan.

When a loving father is shot to death in front of his home by a masked gunman on Halloween night, Los Angeles Police must follow the evidence to determine whether this was a case of holiday hijinks gone awry or something far more sinister.

Halloween turns into a real-life horror movie when a single mother is gunned down on her way home from trick-or-treating by a costumed killer in Florida; detectives uncover an unexpected witness that helps reveal the monster behind the mask.

When two men disappear in the quiet community of Clemmons, N.C., rumors swirl about a devil-worshipping couple and their house of horrors; an investigation leads police to discover there may be more than secrets buried in the backyard.

When a beloved woman goes missing in Everett, Wash., police find that her apartment was the scene of a violent attack; unable to find her, investigators are led to a coven of modern-day wiccans and one witness who reveals the horrifying truth.

Numerous women are found dead by the side of the road with a unique ligature that looks like a dog collar and leash; detectives are stumped until a 17-year-old girl manages an escape from a vicious kidnapper, leading police to a serial killer.

The I-5 corridor in California is taken over by a brazen bandit who terrorizes the highway with a blitz of assaults and murders; the only clue to the killer's identity is a specific athletic tape used to bind his victims.

A serial killer taunts Wichita, Kan., for decades by sending brazen letters and taking credit for horrific kills; at the introduction of the computer era, the killer gets sloppy and accidentally leaves a digital clue.

In the 1990s, Louisiana is terrorized by multiple serial killers; the Zachary Police Department discovers the key to solving their cases when a pattern emerges with personal items missing from each local victim.

Chilling confessions from a vicious slasher detail only some of his 100+ victims; when he's set to be the first serial killer ever released from prison, an eyewitness from decades prior could force justice on the man who vows to kill again.

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 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.

When a well-liked young man in Milwaukee is found shot to death inside his locked home, detectives must piece together his final days through a network of friends and lovers to expose a killer's desire to kill what they couldn't keep.

While investigating a missing Oregon handyman, police stumble upon human remains and are left searching a crime scene straight out of a horror movie.

Rachel Anderson is a vivacious single mother whose world revolves around her children, then she fails to show up for work one day; her disappearance may have something to do do with the terrifying telephone calls she's been receiving.

Karen and Mark Duenas manage to keep the romance alive even after raising five sons, then an ordinary night ends in a tragic murder that will test the bonds of family.

Lurking in the woods and peeping through windows, a cold-blooded serial killer stalks his next victim.

Kelly and Steve join the Kankakee Police Department to help a woman who just missed seeing her mother's killer at their front door when she was 11 years old; decades later, efforts are made to recall any clues to help crack the case.

In the most expensive zip code in Manhattan, an aging, eccentric art collector is found strangled in his apartment.

Sarah Turney became a viral sensation when she posted suspicions on social media that her dad killed her sister, Alissa; Sarah re-examines her and Alissa's childhood, breaking through years of manipulation to reconstruct the truth.

"The Turpin 13: Family Secrets Exposed" is a two hour special hosted by Emmy and Peabody Award-winning journalist Soledad O'Brien. The program gives viewers an in-depth look into the story surrounding David and Louise Turpin and their 13 children. O'Brien retraces the family's past - and present - to see just how far back the secret of the alleged abuse has been going on and how it was kept hidden for so long. Multiple red flags are raised in the form of financial woes, abandoned homes, and unspoken concern from neighbors. Soledad O'Brien brings to light the stories of Louise's sister Teresa Robinette, half-brother Billy Lambert and some of the neighbors.

Eight members of the Rhoden family are brutally murdered execution-style in four different locations on a night in 2016 by another family they consider friends. "The Pike County Massacre," the story of the largest murder investigation in Ohio's history, exposes an underbelly of violence, pitting family against family, mother against son, brother against brother, in a haunting story of lies, secrets and betrayal.

The owner of an extreme-sport venture is found shot dead in his warehouse; police suspect a history of bad business may be to blame, until a contentious family past begins to cast doubt on his devoted son's innocence.

A mother is found savagely murdered in her upscale home, leaving a father and son to blame each other; their airtight alibis lead detectives to a murder plot involving an estranged sibling with nothing to lose.

The Colegroves are beloved in their small town, but when they're brutally murdered in what appears to be a targeted attack, a bitter dispute within their family is revealed, pitting the surviving brothers against each other.

After detectives discover a fire chief's dismembered torso in his own barn, they rush to find his wife.

When a young Texas father is abducted without a trace and later found murdered, Titus County investigators follow a trail of cellphone records and internet history to reveal a dangerous conspiracy fueled by a manipulative mastermind.

On Valentine's Day, an obstetrician finds his wife dead and calls 911; police discover inconsistencies between the blood spatter evidence and his version of events.

Weed analysis and photogrammetry are used to help solve the 1995 murder of a California teenager is found dead after disappearing from her home.

When police recover the submerged car of missing man, they find no body; the investigation that follows uncovers a deadly obsession and the motive for murder.

Emergency dispatch recieved a call from a man who said his girlfriend shot and killed herself. But the wound was not self-inflicted.

Investigators piece together evidence found at the scene of a Native American woman's murder; the tyre tracks and shoe impressions could lead them to the killer.

Experts seek answers to a young businesswoman's death just before she was to testify in a criminal trial.

An anonymous caller reports the rape and murder of a dry cleaner employee; two eyewitnesses tell two similar but not identical stories.

Woman disappears from grocery store parking lot in Boulder, Colo.; investigators find extraordinary clues in a pair of bloody gloves, unique tire tracks, and ordinary grass and pine needles.

In a wealthy area of Philadelphia, police are called to the scene of what seems like a regular accidental drowning; the investigation begins to focus on one person who has many reasons to want the victim dead.

Two women are murdered in the same town and police fear a serial killer is on the loose, further investigation finds that they were both close to the same man.

When a prominent Atlanta judge is shot dead in her upscale home, detectives must figure out if the killing was payback from any criminals she had put behind bars, or if someone close had a personal score to settle.

The senseless murder of a 16-year-old girl in her family's jewelry store rocks the quiet hamlet of Marietta; determined to give her family closure, detectives pull out all the stops to track down the cold-hearted culprit.

A San Diego mother vanishes in 2014; nearly two years later, her body is found in the San Diego Bay, but medical examiners say she has only been dead for a month or two.

A San Diego mother suddenly vanishes in 2014; nearly two years later, her body is found in the San Diego Bay, but medical examiners say she has only been dead for a month or two.

Mischele Lewis' new boyfriend seems almost too good to be true, then she discovers he is a con man harboring dark secrets and embarks on a dangerous mission to expose him.

Kelly and Steve extend their stay in Illinois to help the Kankakee Police Department look into another mysterious case - the unsolved homicide of a mother-to-be and her unborn child.

When the owner of a Brooklyn pizzeria is gunned down in broad daylight in his backyard, the news publishes mafia theories, and the FBI joins the NYPD to investigate.

When a hockey player and a single mom are found dead in an upscale Newport Beach, Calif., condo, loved ones have no idea how they knew each other; the discovery of a link to another area attack launches the race to catch a killer.

A young woman tells her mom she's going out for a night with friends and never returns home in a puzzling case that went cold for nine heartbreaking years; until a shocking confession breaks the case wide open and exposes the brutal missing piece.

When a tech mogul is found bludgeoned to death in his lavish Roswell bedroom, detectives quickly compile a long list of potential suspects; police ultimately zero in on one scorned lover who wouldn't take no for an answer.

Atlanta's thriving hip-hop scene is stunned when up-and-coming rapper Lil' Phat is executed in broad daylight; the case takes detectives into a world of mobsters and kingpins where the victim's lyrics may have foretold his demise.

The grisly double murder of two Lockheed employees stuns their families and leaves investigators baffled; as the case languishes for years, investigators are unable to make an arrest until the prime suspect kills again.

When Bonnie Craig is found dead, police collect DNA but it doesn't match anyone in the system; twelve years later, there is a hit but the man is thousands of miles away; turns out, prosecutors would need more than DNA to convict a killer.

A U.S. Air Force captain who is deployed overseas for long stretches of time finds himself caught in the crossfire resulting from a love triangle at home.

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.

Details expose how the Gucci family was undone by jealousy, backstabbing and, ultimately, an act of murder; insiders close to the fashion empire speak out about the murder of a prominent family member.

When hikers find a 21-year-old UCLA student's body in a Los Angeles-area train tunnel, detectives wonder if his interest in an alternative religion is connected to his murder.

The murder of a young businessman in the Old San Juan district of Puerto Rico marks the start of a 15-year-long hunt to find the killer.

Brooke Wilberger was 19 when she was kidnapped; her family begged for her return, but months passed before police got their first break, a similar attack more than 1,000 miles away.

A small-town girl moves to Las Vegas, where she finds a new career and new love; soon after, however, she vanishes, and within days, police find her body; finding who killed her will be a tougher mystery to crack.

Chilling confessions from a vicious slasher detail only some of his 100+ victims; when he's set to be the first serial killer ever released from prison, an eyewitness from decades prior could force justice on the man who vows to kill again.

The ex-girlfriend of the self-proclaimed Crossbow Cannibal reveals the mental and physical abuse she endured for years at the hands of one of the U.K.'s most heinous serial killers.

Insights into the story of the private royal, including a look at Diana's troubled marriage, her turbulent life in the royal family and the investigation into her death.

Insights into the story of the private royal, including a look at Diana's troubled marriage, her turbulent life in the royal family, and the investigation into her death.

After a tech millionaire's neighbor is found murdered, he goes on the run and plays a high-stakes game of hide-and-seek with the authorities and the press.

Kelly, Tonya and the Alcoa Police Department investigate the 1990 rape and murder of a beloved 80-year-old grandmother and consider if the perpetrator may have been a sadistic random intruder or a member of her own family.

On a bone-chilling January morning, when a 39-year-old day care owner goes missing, her fiance finds her wallet, keys and phone still in the house they share; the mystery deepens when the K9 unit searches the home but finds no trace of her.

All signs point to homicide when a body is discovered in an upscale Boston suburb, but the clues send investigators on a journey to discover an unbelievable truth that seems more like the plot of a movie.

A once prominent heart surgeon is found dead in his bed after suffering mysterious health conditions.

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.

After a mother and son are brutally attacked during a home invasion, Illinois police chase down several leads; they uncover a shocking motive with an occult leader and her loyal followers at the center of the crime.

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.

Skylar Neese,16, vanishes without a trace, turning her parents' world upside down; police think she ran away, but clues on social media point to a more sinister reason for her disappearance.

When a mother of four dies unexpectedly on Valentine's Day, everyone in town assumes she died of natural causes until a detective suspects someone has gotten away with murder.

Halee Rathgeber enjoys taking care of others and hopes to become a nurse, but what makes no sense is that someone wants her dead; the crime scene tells detectives little, but a jaw-dropping moment in the courtroom speaks volumes.

A 40-year-old man is found dead in his car; initially, there is no obvious medical explanation for his death, but when police uncover a love triangle, the tragedy quickly turns into a tangled mystery.

A single mother of three vanishes and potential suspects emerge when police discover she may have been living a double life.

The neighbor of a tech giant who is living in paradise is found dead; suddenly, the entrepreneur extraordinaire is on the run, taunting authorities and tantalizing the press.

At first, Mischele Lewis' new boyfriend seems almost too good to be true; she discovers her dream man has secrets; a single mom goes on a dangerous mission to find out the truth.

An Arkansas realtor sets her daughter up with the richest guy in town, but when he mysteriously dies, she's accused of stealing his fortune; additional deaths and a web of lies ensnare the rural community, leaving a family destroyed.

Details expose how the Gucci family was undone by jealousy, backstabbing, and, ultimately, an act of murder; insiders close to the fashion empire speak out about the murder of a prominent family member.

Details expose how the Gucci family was undone by jealousy, backstabbing, and, ultimately, an act of murder; insiders close to the fashion empire speak out about the murder of a prominent family member.

A recent law school graduate in Georgia who has a promising future disappears without a trace.

Beautiful, ambitious reporter Jennifer Servo is shockingly murdered in 2002; Kelly and Steve are determined to help the Abilene Police Department catch her killer.

Criminology student Imette St. Guillen was dedicating her life to catching killers when she herself was caught by one while celebrating her birthday late at night at a bar in lower Manhattan.

After a woman disappears without a trace, her husband and her boyfriend are both quick to point fingers at the other; investigators must determine who is telling the truth and who is being framed for a brutal murder.

After a husband is found guilty of murdering his wife and kids, a decadelong battle slowly unravels the truth behind this dark crime.

Dr. Al Carlisle's study of the violent mind continues when the men convicted of Utah's horrific Hi-Fi Shop mass murders enter the Utah State Prison, awaiting a death sentence.

Dr. Carlisle's Mormon faith is tested when Arthur Gary Bishop asks for his help in understanding how he became a serial killer.

As Dr. Carlisle develops his theory of the development of the violent mind, Bundy escapes from prison and goes on a murderous rampage.

Chilling confessions from a vicious slasher detail only some of his 100+ victims; when he's set to be the first serial killer ever released from prison, an eyewitness from decades prior could force justice on the man who vows to kill again.

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.

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

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.