An expectant mother, Samantha Dean, is shot to death in an abandoned parking lot in Bastrop, Texas; as detectives dig deeper, they discover a diabolical plan, a shocking betrayal and a killer relationship.

The mysterious and near fatal shooting of an America security analyst outside Washington, DC may be linked to the murder of a Russian agent in London.

After teenagers Rachel Shoaf and Sheila Eddy are convicted of murdering their 16-year-old friend, Skylar Neese, Skylar's parents discuss the night she disappeared; Rachel Shoaf's therapist, Patricia Bailey, shares her thoughts.

A verdict is given in the case of a woman found murdered just three months after being married.

A murderous ripple spreads through a lovely New England town when a ghastly discovery is made in a backyard barn; the search for answers uncovers troubling questions about a doting mom and everyone is a suspect until the truth is finally uncovered.

Federal agents descend on a tiny Ohio town after a beloved girl goes missing; fearing their cornfields harbor a terrible truth, theories abound and panic spikes in this serene community; it's a race against time as investigators close in on a killer.

Investigators in York, Penn., enter a dark world of buried secrets after a couple makes a stunning discovery in their backyard; a brother appears desperate to find his sister, but in a strange twist could lead detectives to a staggering truth.

A case of identity theft in the Arizona desert takes a blood curdling turn when investigators make a ghastly discovery in the most unlikely of places; a beloved man may have been living in fear.

A southern California community is gripped by fear when one of its own vanishes without a trace; when a teen disappears, they fear a backyard park has become a hunting ground; a vicious predator must be stopped before it's too late.

When a Florida teen tending to some yard work digs up a frightening scene, investigators find themselves in the middle of a twisted affair; a wild trail of evidence leads them across three state lines and the discovery of an astounding truth.

A young man calls 911 to report that his fiancee fatally shot herself in their bed; her family insists she would never take her own life; the investigation drags on for years, until an unexpected development leads to a stunning conclusion.

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 weekend trip to an Alaskan lodge turns deadly for a young mother when she's killed by her boyfriend; the death is ruled an accident and the case is closed until an eerily similar incident in Montana drives investigators to reopen the case.

A pastor places a frantic call and pleads for help to save his fiancée, who, he says, just shot herself, but as investigators look closer at the crime scene, a darker side to this happy relationship stuns everyone.

Investigators uncover a web of lies a decade after a couple's romantic evening atop Rockefeller Lookout in New Jersey ends with the wife's tragic death.

A man denies killing a pedestrian in hit-and-run, claiming he sold the car in question; authorities track down the car to find critical evidence.

Three years later, a second autopsy determines who's right when a medical examiner and detectives disagree on the cause of death.

Hit-and-run boating accident that kills a popular young man causes investigators to search for one boat out of thousands.

A woman is found dead on her bedroom floor, the only clue is a bloodstained sheet; breakthrough forensics enable police to identify the killer.

A young man is killed in a mysterious car crash, but the evidence at the scene lead investigators to believe it is not an accident; forensic science reveals what really happens, and the truth devastates three families.

A woman is found dead, police use blood evidence and computer forensics to convince a jury that the murderer is guilty.

When an elderly woman dies in an apparent robbery-homicide, evidence suggests the suspect broke out of the house rather than breaking in.

Wealthy man is shot dead while his wife is forced to open their hidden safe, but they couldn't be identified because they were wearing ski masks.

The bomb was constructed to cause as much damage as possible and it did, killing the victim with deadly force and flame; a painstaking search yielded tiny clues, which identified the killer as surely as if he'd signed them.

A twelve-year-old girl claims that she was abducted and sexually assaulted; her story seems unbelievable until police discover fibers on her clothing.

A man calls for help when his wife has a fatal fall down the stairs; numerous amount of bloodstains make police suspicious.

A decade old case reopens, and a few seconds of a 911 call enable investigators to determine who is responsible for a murder.

A flawed envelope is an unlikely clue to identifying a killer who laced a water cooler with cyanide and caused the death of a woman.

A mussel diver and his fiancée are found dead in their burnt home; a tiny clue points to arson and murder.

An expectant mother, Samantha Dean, is shot to death in an abandoned parking lot in Bastrop, Texas; as detectives dig deeper, they discover a diabolical plan, a shocking betrayal and a killer relationship.

Serving life sentences for the double homicide of their former roommates, Afton Ferris and Michael Schallert give exclusive interviews about the night that changed their lives forever; each tells their side of the story with new allegations.

When a young woman is found nearly murdered in her apartment, officials wonder if it is connected to the disappearance of a young woman in nearby Denver weeks earlier.

When a young woman is found nearly murdered in her apartment, officials wonder if it is connected to the disappearance of a young woman in nearby Denver weeks earlier.

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.

The execution-style murder of a Fountain Valley wife and mother shocks the OC and leaves police with no leads on motive; the community bands together to find justice until a similar shooting reveals the truth behind a murder plot gone awry.

The Sachs family seems to be living the OC life in its hilltop mansion when the family is suddenly torn apart by a vicious shooting in the middle of the night; Investigators reveal a surprising list of enemies who had the victims in their sights.

Thomas and Jackie Hawks live aboard their luxury yacht until their disappearance sparks an investigation that turns on the alleged sale of their yacht.

The larger-than-life owner of a strip club empire is mowed down with a machine gun before the gates of his Orange County estate; the secrecy surrounding the clubs and their employees makes the case extremely challenging for investigators.

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.

In the '90s Atlanta tech boom, an IBM programmer is found shot to death and surrounded by cocaine in his home; as detectives dig deeper into the past of this tech phenom and family man, they're shocked to discover all isn't what it seems.

Peachtree City socialites Ruby Joyner and Halima Jones are found murdered in a van, igniting a frenzy within their wealthy community; when police dig into the women's personal lives, they uncover a secret that blows the case open.

Michelle Young was married to her college sweetheart and pregnant with their second child when she was murdered; in the search for her killer, detectives uncovered a marriage riddled with secrets but cracking this complicated case took years.

She was beautiful, trusting and troubled; the young woman from a prominent family was just turning it around and realizing her promise; then she vanished; when the police seemed unable to find her, her family hatched a plan to solve the mystery.

After four people turn up dead, investigators chase a serial killer who may be reenacting scenes from a horror movie released in the 1980s.

When a young pregnant mother goes missing in Virginia, her family embarks on a search, but the case goes cold; years later, investigators find a woman who may hold the key to solving the case.

When Rob Limon is murdered at work, the investigation uncovers deep secrets about sex, friendship, religion, and family; it is a case featured in Dateline's chart-topping podcast Deadly Mirage.

The neighbors enjoy mixing business with pleasure then a murder makes them face the reality that a killer is in their midst.

When Rob Limon is murdered at work, the investigation uncovers deep secrets about sex, friendship, religion, and family; it is a case featured in Dateline's chart-topping podcast Deadly Mirage.

A crime takes place in Florida but detectives don't discover a motive for murder until they look into a tropical island thousands of miles away, where a festering grudge was born.

A man convicted of murdering a woman in her upscale Austin, Texas, home tells his story for the first time.

A man convicted of murdering a woman in her upscale Austin, Texas, home tells his story for the first time.

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.

Kelly and Yolanda are faced with the difficult task of finding the killer of a young mother who was shot in her car while pulled over on the side of the highway.

Kelly and Yolanda travel to Fort Wayne, Ind., to investigate the 1993 murders of a young mother and her 6-year-old daughter.

Kelly Siegler and her team of investigators dive into a small town murder case that lingered for years without answers or justice that Kelly has never forgotten.

Kelly Siegler and Johnny Bonds aid local law enforcement and dig into their freshest case yet, the 2-year-old disappearance of a professional photographer; DNA testing and cell phone data analysis could be the key to cracking the case.

The mysterious disappearance of an elderly New York socialite leads to the investigation of Sante Kimes and her son, Kenny.

The truth behind the brutal deaths of a prominent and wealthy couple in Libertyville, Ill., remains dormant until 15 years later when a new police task force exposes a murderer who let money remove the sense of consequence.

When a successful Texas lawyer and his wife are executed while sleeping in their bed, Houston police team up with a private investigator, who gets dangerously close to a killer, to uncover a greedy mastermind who proves that privilege can be deadly.

When the half-dressed, partially frozen body of a Navy veteran is found lying in a ditch, rumors and lies will challenge detectives' efforts to lay bare the truth behind the chilling death.

An aspiring Playboy model is murdered in Miami; a seven-second clip of her last moments alive are caught on security video and could hold key clues; the haunting images make this case one of Dennis Murphy's most memorable.

When a pastor loses a second wife in an accident, authorities become suspicious; Dennis Murphy returns to this unforgettable story of evil and betrayal, wondering how far this man of God might have fallen.

Years after a Montana man is found dead, his son searches for answers; Keith Morrison cannot forget the son who opened a box and faced a terrifying family secret.

A young Tennessee woman vanishes and misses her family's Thanksgiving dinner; determined to track her down, her family takes matters into their own hands.

After a nurse and mother-of-three is murdered inside her Illinois home, investigators uncover security camera footage that could be key to solving the case.

This feature documentary focuses its lens on a horrific crime in a bucolic college town after four University of Idaho coeds are brutally stabbed to death and a brilliant criminology student, Bryan Kohberger, stands accused of their murders. As prosecutors and defense attorneys sift through the evidence, the motive remains a baffling mystery.

After a nurse and mother-of-three is murdered inside her Illinois home, investigators uncover security camera footage that could be key to solving the case.

A man claims his wife died by suicide, but a suspicious house fire 24 years later raises doubts; Josh Mankiewicz remembers the suspect who could not stop talking.

After a 15-year-old girl disappears, investigators discover a creek where the local teenagers hang out; Dennis Murphy looks back on the case that kept him guessing until its astonishing conclusion.

Susie Casey, an outgoing mother of four, is going through a divorce when she vanishes; police investigate three men.

Police investigate three men in the life of Susie Casey, an outgoing mother of four going through a divorce, who was 20 steps from her front door when she vanished.

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

Kelly and her team head to Oregon to investigate the mysterious disappearance of a man who vanished from his home without a trace; with seven suspects and missing gold coins, serious questions linger about what happened to Glenn Pennie.

In Hope, Ark., Kelly and her team investigate the murder of a young mother who was brutally executed in her home and whose son may hold the clues to her killer's identity.

In a crime that terrified a community, Kelly and Tonya Rider investigate the tragic stabbing death of an elderly woman in her own home just one week after she buried her husband.

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.

While investigating the tragic murder of a devoted father in Virginia, detectives must work their way through several disturbing theories and contentious family dynamics to get to the heartbreaking truth.

Death hits close to home when a Mississippi father of four is brutally killed on his own front porch; soon, a mother and son turn against one another as detectives work to untangle a murky tale of he said she said to close in on a killer.

The identity of a Jane Doe found dead in a New Jersey park holds the key to unraveling a tangled web of fraud and murder that spanned years and pulled in multiple victims along the way.

When the body of a beloved father is discovered in a South Carolina home, detectives uncover a toxic love affair that had deadly consequences.

Letti Strait was found guilty of her ex-husband's murder 12 years after the crime.

An attorney is murdered, and a trail of obsession and jealousy emerges.

A chance for love brings an Oklahoma woman to rural Texas, but her quick disappearance has investigators following a paper trail that will expose the treachery of greed.

The twisted story of a heinous murder plot in Kansas; rife with betrayal and deceit; in an exclusive interview with someone personally involved in the crime, hear a riveting account of the deadly scheme.

After a John Doe's body is found at a Virginia park, investigators track a killer who has a long history of wrongdoing.

The mysterious disappearance of a beloved nurse leads Arkansas investigators down a twisted path of familial betrayal; as detectives hunt for the missing woman, evidence upturned along the way points toward deadly foul play.

The body of an unidentified female is found within a forested nature center in Bloomington, Ill; investigators must scramble to piece together her fractured life and try to determine just how familiar her killer may be.

Former police officer Laurie Bembenek is found guilty of murdering her new husband's ex-wife; years later, new evidence comes to light that changes everything.

When Idaho family members return home from a church gathering, they find dinner burned to a crisp, a missing fiancée and signs that a brutal crime has been committed; all leads point close to home as detectives begin their investigation.

A 14-year-old girl discovers her wealthy father brutally executed in their home late at night; the investigation proves that not everything is as it seems, uncovering love affairs, possible connections to the mob and a twisted journey to justice.

As investigators dig deeper into a man's disappearance, they realize his recent online presence may be a charade.

Kelly and Steve Spingola take on a case in his home state of Wisconsin and must navigate a tangled family tree of witnesses and suspects to find the killer of a loving husband fatally shot in his cabin.

Kelly and Steve Spingola head to Flint, Mich. to investigate the brazen 1991 shooting of a beloved woman right outside her home; as she died in her sister's arms, her final words could provide insight into who killed her.

After following Laci Peterson's case for more than 15 years, the show delivers a comprehensive report with rarely seen interrogation video, new insight from prosecutors, and surprising details from Amber Frey, who helped uncover the truth.

After following Laci Peterson's case for more than 15 years, the show delivers a comprehensive report with rarely seen interrogation video, new insight from prosecutors, and surprising details from Amber Frey, who helped uncover the truth.

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

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.

When Rob Limon is murdered at work, the investigation uncovers deep secrets about sex, friendship, religion, and family; it is a case featured in Dateline's chart-topping podcast Deadly Mirage.

After a nurse and mother-of-three is murdered inside her Illinois home, investigators uncover security camera footage that could be key to solving the case.

Kelly and Steve head to his home state to unravel the murder of a recently married Navy veteran, shot execution-style in his lakeside home; an examination of phone records could hold the key to uncovering his killer's identity.

The "Cold Justice" team tackles the disappearance of a loving mother who allegedly disappeared during a family vacation; the investigation uncovers evidence that she never left town alive.

The "Cold Justice" team investigates the mysterious death of a pregnant mother whose skull was found on a wooded mountain; with multiple suspects and conflicting stories, can they uncover the truth and get justice for her and her unborn child?

Kelly and Steve team up with the Clinton County Sheriff's Office to solve the heartbreaking cold case of a young mother who vanished, leaving only her wedding rings behind; did she walk away, or was she murdered?

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?

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.

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.

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.

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.

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.

Firefighter Ben Amato is callously murdered, but the case goes cold; a jailhouse snitch, critical clue and seemingly unrelated homicide expose a sinister plot as investigators stay on the trail of a heartless killer.

Young mother Elizabeth Ferrell goes missing in Texas as a body is found in Louisiana; as detectives connect the dots between the two cases, secrets rise to the surface and reveal a tale of love, betrayal and revenge.

On the 20th anniversary of the case that captivated and divided the country, new insights are given into the murders and trial, including a witness who saw Simpson the night of the murders but never testified.

On the 20th anniversary of the case that captivated and divided the country, new insights are given into the murders and trial, including a witness who saw Simpson the night of the murders but never testified.

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

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

When a San Diego woman who is near death arrives at an emergency room, the FBI and local law enforcement are called in to try to solve a medical mystery and a horrific crime.

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

When the last real cowboy is found dead at home, detectives dig in and are hard-pressed to find anyone who'd want to see this loving father murdered; a closer look at his nearest confidants unravels a heinous plot twisted by love and money.

After a beloved town librarian is gunned down, investigators discover that this murder-for-hire gives a whole new meaning to a broken heart.

When a Texarkana square dancer is gunned down on the steps of her home, detectives follow a trail of surveillance footage leading straight to the killer.

Allegations of real estate fraud and rumors of murder have Sarasota Police on the trail of a criminal whose final plan to evade trouble lands her in the very hands she tried to avoid.

When a Kapowsin, Wash., mother is discovered murdered on her couch in a compromised position, investigators must piece together all the evidence to determine if this was a random crime of opportunity or a facade to humiliate the victim.

Police race for answers after a school teacher is found murdered in her San Antonio, Texas, apartment; while lies and betrayals come to light, the case goes cold, but one detective refuses to give up.

A remorseful Pandora returns; her son Cody Henderson speaks out, revealing why he took part in a crime that landed him in prison for life and how he feels about the mother who turned on him.

Tausha Morton sits down to clarify what led to her ex-husband's death; she speaks out against the triggerman, alleging that there was never a murder conspiracy; she discusses how she feels being behind bars for life.

Serving life sentences for the double homicide of their former roommates, Afton Ferris and Michael Schallert give exclusive interviews about the night that changed their lives forever; each tells their side of the story with new allegations.

Breaking her silence for the first time, Gloria Aiken sits down for an interview to plead her case in the 2008 murder of her longtime partner; she reflects on the events that led to her arrest and hopes to clear her name.

In Marietta, Ga., a businessman is savagely murdered in his home; the violent and personal attack leads the detectives to look for the killer among those who knew him best.

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.

Breaking her silence for the first time, Gloria Aiken sits down for an interview to plead her case in the 2008 murder of her longtime partner; she reflects on the events that led to her arrest and hopes to clear her name.

In Marietta, Ga., a businessman is savagely murdered in his home; the violent and personal attack leads the detectives to look for the killer among those who knew him best.

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.

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.

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 two sisters' husbands turn up dead within weeks of each other, Florida detectives investigate whether the cases are linked.

A woman walks into her home to find her daughter covered in blood; a single drop of blood is the key to finding the attacker.

A woman walks into her home to find her daughter covered in blood; a single drop of blood is the key to finding the attacker.

A successful businesswoman and mother of three is found shot in her office; the investigation into her death leaves a family divided.

After a well-known business owner is found dead in his Lake Orion apartment, investigators are left untangling a web of lies to uncover a deadly duo looking to get rich quick.

When a devoted father is found brutally stabbed to death in his Florida home, detectives turn their focus to the picture-perfect family who appear to have it all.

After a Georgia father is discovered bludgeoned by a hammer in his own bedroom, it takes years for detectives to nail down if this murder is connected to a series of online romances or a case of mistaken identity.

When a man goes missing in rural Barnesville, Ga., investigators try to determine if he left on his own or if foul play occurred.

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.

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.

Investigators must determine if they are looking for professional killer, or if they are being told lies from someone in the victim's inner circle, when a Tennessee man who was rumored to have connections with the mob is murdered.

When the loving wife of a Vietnam veteran is found dead in a highway commuter lot, Missouri detectives work to chase down the mastermind of a twisted murder-for-hire plot.

After a soon-to-be-wed scrapyard owner is killed, Texas detectives must chase down every lead and conduct hundreds of interviews in order to find the truth hidden behind lies, betrayal and broken hearts.

When an Oklahoma teen finds her mother and father murdered in their family home, detectives uncover bizarre photos and use new technology to reveal a dynamic duo at the center of the heinous crime.

The abrupt disappearance of a Colorado rancher prompts concerned friends to press investigators to dig up the truth hidden beneath his ranch's calm exterior.

Breaking her silence for the first time, Gloria Aiken sits down for an interview to plead her case in the 2008 murder of her longtime partner; she reflects on the events that led to her arrest and hopes to clear her name.

Yolanda Saldivar, the killer of Tejano music superstar Selena Quintanilla Perez, speaks out about her relationship with the singer and hopes to shed new light on what led to that fateful day in 1995.

Yolanda Saldivar and her family reveal never-before-seen documents and information that they believe changes the narrative of what happened inside the hotel room when Selena died and in the weeks leading up to that fateful day.

The tragic murder of world-renowned music artist Selena Quntanilla-Perez by her number on fan, Yolanda Saldivar.

Convicted of murdering pop star Selena, Yolanda Saldívar requests a new trial on the basis that the prosecution had access to evidence that her defense team did not.

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.

In Marietta, Ga., a businessman is savagely murdered in his home; the violent and personal attack leads the detectives to look for the killer among those who knew him best.

Two decades after a Jacksonville, Fla., woman goes missing, her son solves the mystery that haunted his childhood.

Randy Baker finds his calling as a counselor then winds up dead.

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.

A Texas woman's apparent suicide devastates the family that she leaves behind, but after one investigator dedicates decades to solving the mystery of what drove her to make such a tragic decision, a far more sinister truth is discovered.

Tragedy strikes a rural Nebraska town when a beloved high school volleyball coach dies in a fiery car accident; but as investigators reconstruct her tragic death, the resulting clues steer the investigation to reveal a horrifying series of events.

An apparent victim of an accidental drowning washes ashore on idyllic Cocoa Beach, Fla., but as investigators pull back the layers of the victim's personal life, a far murkier truth is revealed.

In the early morning hours after Valentine's Day, a man is found dead after an apparent drug overdose; but a jail informant gives investigators a tip that abruptly changes the case, and a deadly pattern of deaths in the family is revealed.

An elderly woman is found dead in her home outside of Boston after an apparent accidental fall down her stairs, but with the help of a confidential informant, police obtain shocking audio that reveals the truth behind her death.

Investigators suspect foul play when they discover a body lying along a lonely stretch of New Mexico highway, but the bizarre trail of evidence only deepens the dark enigma surrounding a seemingly well-respected family man.

In May 2017, a teenage girl dies from an apparent suicide; Utah investigators suspect that there's more to the scene than meets the eye, and a close friend may have helped her end her own life; as evidence comes to light, a darker truth is revealed.

When a homemaker dies in her hot tub, detectives in a normally quiet Idaho town first believe it to be a horrible accident. But the investigation leads back to the unsolved murder of her husband, reminding police that lightning never strikes twice.

A Thanksgiving feast turns into a family's last when a cold blooded killer brutally stabs and dismembers a couple the day after their holiday celebration.

A woman is shot to death while driving her sons home from a Thanksgiving celebration; the hunt for her killer leads to an unlikely suspect, making investigators realize her murder is not as random as it seems.

A deranged shooter attacks a family Thanksgiving dinner, leaving four dead and even more wounded, setting off a massive holiday-season manhunt to catch the killer - before they can strike again.

A prominent couple are found brutally murdered in their Montgomery, Ala., home on Thanksgiving night, leading detectives on a cat-and-mouse chase spanning thousands of miles across multiple states.

For ten years, the disappearance of a college co-ed remained a mystery; new scientific testing cast a different light on a man who had been a suspect all along.

Tipster is found dead after revealing that a woman's death 16 years ago was murder.

The murder of 53-year-old Paul Gruber is examined and the evidence points to Darryl Robin Kuehl, who was later convicted of the crime.

A man states that a robber shot and killed his wife while they were on the beach, but a song he downloaded makes investigators suspicious.

Detectives discover new clues left by a stalker's letter to his victim.

The body of an insurance assessor is found in a river in Tampa, Fla.; a unique murder weapon and blatant clues lead the police straight to her careless killer.

When a high school athlete is killed in a hit and run accident, investigators hoped tiny paint chips and shards of plastic would lead them to the driver.

A woman is abducted and a month later found dead, then a tip leads investigators in the right direction.

How the bombs were made leads investigators in Colorado to find the perpetrator.

DNA profiling reveals clues leading to a killer's identity 20 years later.

A murder in Australia baffles police, until they find a device intended to save lives is the only witness to the man's death.

When a man dies after falling down the stairs, a witness says one thing and the evidence says another.

A wax bullet, white blanket and olive colored carpeting tell a lot about the murder of a young woman found in a ravine.

When a house burns to the ground and a woman's charred remains are found, investigators must determine whether it was an accident or arson.

When a pregnant army wife and mother is found shot to death in her home, it is ruled a suicide, but dogged police work unlocks a plot and secrets buried in ashes, thousands of miles away.

A former Gang Unit investigator is found dead in his crashed van on the freeway, and all signs point to a DUI. But when four bullets are found in his body, a decade-long homicide investigation must consider gang retribution or lover's revenge.

A tight-knit Long Island family go to extraordinary lengths to find their missing sister.

A tight-knit Long Island family go to extraordinary lengths to find their missing sister.

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

Keeping up appearances is key in the OC; the Stahls are found shot to death on the side of the Ortega Highway; the façade turns deadly.

The brutal murder of three members of a family in an old monied Fullerton enclave reverberates throughout the neighborhood and the rest of Orange County; the investigation reveals the family's dark secrets and a tragically OC motive.

A fire breaks out at a hilltop mansion; OC detectives discover two bodies riddled with bullets; police must investigate the affluent and seedier side of the victim's past to discover who would take these measures to erase their existence.

A rising star is brutally murdered in his seaside Huntington Beach home, where his wife, Dixie, was also assaulted; after years of determined and methodical investigation, the true killer is revealed.

When an Atlanta businessman is shot to death in front of his son's preschool, detectives try to track down the disguised gunman.

When a young paralegal is discovered bound and stabbed to death in his Lakewood Heights home, Atlanta detectives race to find his killer.

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.

After a 23-year-old suburban Atlanta mother is shot and left for dead in front of her infant daughter, investigators unravel a complicated scheme involving someone close to the victim, shocking the Powder Springs community.

Celebrity dog trainer Mark Stover and his wife Linda build a thriving business and a beautiful home, but their dream life doesn't last; an affair leads to a bitter divorce, then Mark vanishes in a mystery with the makings of a Hollywood thriller.

It was Easter Sunday; the Stock family celebrated at home; hours later, gunshots turned their farmhouse into a house of horrors; there was an arrest but one tiny clue didn't fit; this case was far from being solved.

When Rob Limon is murdered at work, the investigation uncovers deep secrets about sex, friendship, religion, and family; it is a case featured in Dateline's chart-topping podcast Deadly Mirage.

Nearly 40 years after young wife and mother Cathy Krauseneck is found murdered with an axe in her upstate New York home, a new team of investigators joins the cold case to uncover the killer.

Judy Carlson lived in a painful limbo; her son disappeared without a trace; years went by and she may never have known his fate if not for a rookie detective's dogged work, but to solve this cold case, the investigator also need the help of a killer.

Nearly 40 years after young wife and mother Cathy Krauseneck is found murdered with an axe in her upstate New York home, a new team of investigators joins the cold case to uncover the killer.

Russel Douglas is a troubled father hoping for a fresh start when he is found shot dead in his car; the investigation turns up few clues until an anonymous tipster sends detectives on an international manhunt to unravel a mystery.

The investigation into the disappearance of a Marine's 19-year-old wife reveals a secret love triangle and multiple suspects.

The investigation into the disappearance of a Marine's 19-year-old wife reveals a secret love triangle and multiple suspects.

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.

When a beloved college student dies under suspicious circumstances, controversy rages for years between investigators, medical examiners and her family, until a final shocking conclusion is reached.

Hospital administrators grow concerned when a group of hospital patients dies from natural causes. It takes more than 20 years, and a relentless investigative team, to convict a killer.

A couple's pickup is found submerged in a lake, and the wife's death appears to be the result of a horrible accident until investigators learn that not everything is as it seems in this pair's union.

A man is found in a west Los Angeles alley, dead from an apparent hit and run; when investigators dig deeper, strange suspects emerge in a twisted tale of greed.

After a beloved Missouri barfly is found stabbed in his home, detectives spend years chasing down leads until a local pastor reveals a shocking confession from one of his parishioners, revealing a twisted desire and deadly secret kept for years.

When a prominent businessman goes missing, Georgia investigators race against the clock to locate him, uncovering a killer who will go to any lengths necessary to stay hidden.

Dallas detectives are led on an international manhunt after a young dentist is shot to death at her apartment complex, leaving a trail of surveillance evidence and a deep conspiracy of lies.

After small-town newlyweds are found gunned down next to their car, Georgia detectives start a multistate investigation and discover just how far a criminal trio will go to prove itself.

Gary Hilton is a name Dennis Murphy will always remember; a hiker goes missing and authorities suspect Hilton is reenacting a slasher movie; Dennis reflects on the real-life murder spree that terrorized the American South.

Keith Morrison revisits a story that has haunted him for years; when detectives find a missing woman's car abandoned on a bridge, their investigation uncovers a tangled plot involving money, friendship and a deadly betrayal.

A mother of two vanishes in Monrovia, Calif.; as detectives investigate, the woman's loved ones reveal that she feared she was being stalked; for Josh Mankiewicz, cases like these are all too familiar, and that's a tragedy he just can't shake.