When a Sarasota, Florida gallery proprietor is found murdered and posed like a grisly sculpture, everyone in the renowned art community fears for their lives wondering if it could be one of their own artists putting evil on display.

Examining the story of Gypsy Rose Blanchard and Nicholas Godejohn and their joint decision to kill Dee Dee Blanchard; featuring an exclusive prison interview with Nicholas Godejohn.

A pregnant woman's unexplained disappearance casts suspicion on a mysterious couple who recently entered her life.

When Tina Sandoval disappears, her parents and loved ones spend years searching for her; a secret she was keeping may lead to clues about what happened to her.

When Tina Sandoval disappears, her parents and loved ones spend years searching for her; a secret she was keeping may lead to clues about what happened to her.

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

Nathan and Denise Leuthold build their family on faith, but suddenly one of them dies, and the other is under suspicion; it's a story that stays with Andrea Canning, both because of what happened and when it happened: Valentine's Day.

When a novelist's wife is found dead at the bottom of the stairs, investigators wonder if it is an accident or murder; Dennis Murphy interviews main suspect Michael Peterson and returns to the case with insight only he can share.

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.

After a former fire department volunteer dies in a house fire, inexplicable findings on scene, prison informants, and forged documents expose a duplicitous scheme, driven by insatiable greed, that began more than two years prior.

When a Brooklyn native is found shot to death in the backseat of his car in a rough Atlanta neighborhood, police have to figure out if trouble followed him south or if the killer is in his inner circle.

A mysterious shooting of a religious family man leaves a community questioning if it was a drug-related slaying or a bloody family affair.

A quiet Wisconsin town is rocked by its first homicide in six years when an eccentric father of four is found dead in his basement.

An Army vet survives two tours in Iraq, only to be gunned down in his own home.

A parking lot shooting in the dead of night leaves detectives with a long list of suspects, but the killer hides in plain sight.

A troubled woman turns her life around when she moves back home to the family farm; when her elderly mother disappears, police uncover a twisted web of deceit, betrayal and forbidden romance.

When a charismatic father and adored member of the local youth sports community is bludgeoned to death, police must discern fact from fiction to pinpoint his murderer.

After a young mother is murdered in broad daylight, Texas authorities are on a hunt for a masked gunman; the ensuing investigation uncovers a bitter custody battle and a vicious plot born of obsession.

When a nurse's aide disappears without a trace, detectives learn she was entangled in a complex love triangle. After a tragic discovery in the woods, the investigation points to a sordid affair and a jealous lover looking for revenge.

When a beloved woman in North Carolina is found stabbed to death in her own home, investigators uncover an unnerving history of harassment carried out by a killer blinded by jealousy.

The body of a teen is found at a local party spot and theories surrounding her death spread, but the case goes cold for 30 years, until the investigation heats back up.

Authorities are puzzled when a beloved Georgia grandmother is shot execution style, but as the investigation unfolds, a once close-knit family turns against itself.

After leads dry up in a missing person case, detectives in Ennis, Texas, discover a severed body part at a nearby lake; after confirming the DNA match, they begin to uncover the rippling relationship that led to the death of a beloved father.

The stabbing murder of a 20-year-old woman in the suburbs of Philadelphia stymies detectives until a series of eerily similar murders six years later reveals a killer that has been hiding in plain sight all along.

After a young mother mysteriously disappears, all of Philadelphia unites in their efforts to find her. But as police begin peeling away the layers of her life, they discover the grisly truth behind what happened to her.

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

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

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

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.

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.

Kelly and her team investigate a murder that shocked the small Louisiana community of Morehouse Parish; the brutal stabbing and bludgeoning of beloved mother and church member Mattie Williams; enhanced episode.

Siegler and McClary travel to Dickson County, Tenn. to search for clues that may help solve the 1998 murder of a grocery store owner.

Kelly and Steve investigate the murder of a 17-year-old girl found strangled to death by the railroad tracks.

When a Holocaust survivor and the king of the disco scene is found bound and murdered on the Upper East Side, detectives embark on a multi-borough investigation, uncovering a salacious private life with a woman who may hold clues to his demise.

When a killer tries to use the chaos of one of New York's worst weather catastrophes to get away with murder, detectives in Far Rockaway, Queens fight through Mother Nature's wrath, uncovering a plot of lust, jealousy and, ultimately, betrayal.

When a Bronx businessman is gunned down at a drive-through, detectives look back into the series of vicious attacks on the family that led up to the murder. A trail of text messages leads to a shocking perpetrator nobody ever could have imagined.

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.

When a beloved North Philadelphia school teacher is ambushed in a Dunkin' Donuts drive-thru, detectives uncover a deadly plot involving jealousy, deceit, and revenge.

The investigation of a bridal shop supervisor's violent murder leads detectives to Philly's music scene to reveal a hit list, an ultimatum, and an abusive musical mastermind.

A beloved couple is found murdered among a lifetime of valuable collectibles in their home; investigators want to know if there is a connection between the memorabilia and the murders.

International fugitive Nicholas Rossi faked his death as investigators closed in on him after rape and fraud allegations; Andrea Canning tracks down the man of many identities and looks back on one of the wildest interviews of her career.

A man is found stabbed to death after a night in a strip club; a drop of blood on a bedspread becomes critical evidence five years later.

After police identify a murder victim thanks to her butterfly necklace, they discover several co-workers had vendettas against the victim.

The brutal murder of a construction site foreman looks like the work of a disgruntled employee, but forensic science points to an unlikely suspect.

A shooting victim mutters the name of her apparent assailant before dying, but fingerprint comparisons, handwriting analysis, ballistics and DNA testing show someone else close to home is the true killer.

A woman's story seemed far-fetched; she tells investigators that a man broke into her home wearing only underwear and gloves, killed her boyfriend and raped and terrorized her.

After a Delaware man's mother is found dead, he tells a story that's so improbable police think it can't possibly be true.

A family vacation turns into a terrifying search for a missing wife and baby, then becomes a manhunt for a killer who committed a horrific crime.

A DNA dragnet catches a killer eight years after the kidnapping, rape and murder of a college coed in Oklahoma.

A nosy neighbor with a disturbing obsession becomes a suspect in a woman's murder at an upscale apartment complex; police discover an incredible link to an unrelated murder thousands of miles away.

A college student turns up dead, and her boyfriend becomes a prime suspect when blood splatters are discovered on his wall.

When sheriff-elect Derwin Brown is gunned down just days before taking office, investigators uncover a tangled web of secrets - forcing them to confront the chilling possibility that the killer may be hiding within law enforcement's own ranks.

A manipulative woman enlists her father to carry out her devious plan to kill her ex-husband.

When a woman is abducted during her evening shift at a gift shop, her family keeps the case in the public eye for decades, until investigators finally solve the mystery.

When a woman is abducted during her evening shift at a gift shop, her family keeps the case in the public eye for decades, until investigators finally solve the mystery.

A mystery in paradise unfolds when Sarm Heslop vanishes from her boyfriend's luxury yacht in the U.S. Virgin Islands; chilling details emerge on the case that made international headlines and left investigators with more questions than answers.

When 20-year-old Anna Cardwell is found shot to death in her rural Alabama home, her close circle of friends mourn in disbelief. But soon speculation begins to swirl that one of their own is not who they seem.

A university for the deaf serves as a haven for its students. But when a freshman is brutally murdered in his dorm, the student body is plunged into terror. When it happens again, investigators race to uncover a connection and stop a serial killer.

When a Sarasota, Florida gallery proprietor is found murdered and posed like a grisly sculpture, everyone in the renowned art community fears for their lives wondering if it could be one of their own artists putting evil on display.

When sheriff-elect Derwin Brown is gunned down just days before taking office, investigators uncover a tangled web of secrets - forcing them to confront the chilling possibility that the killer may be hiding within law enforcement's own ranks.

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.

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.

She was a beaming bride; it was a haunting death; Sarah and Ryan were newlyweds when she drowned in the bathtub; did she die of natural causes or was it deliberate; it took three trials to find the truth.

It all began when a best-selling author found his wife at the base of the stairs; the story makes headlines and has been covered for more than a decade; Michael Peterson answers questions.

A woman is murdered in a home invasion; her best friend and neighbor is shot the following night; investigators unearth disturbing secrets that suggest the cases may be linked.

When deadly gunfire erupts in an Austin, Texas home in the middle of the night, detectives wonder if the homeowners' jewelry business is a possible motive; an investigation uncovers a suspect no one saw coming.

After a 25-year-old mother is gunned down in broad daylight by a murderer wearing a disguise, detectives confront a most unlikely suspect.

An investigation of abuse allegations against one of the owners of the religious reform school Circle of Hope.

After a 25-year-old mother is gunned down in broad daylight by a murderer wearing a disguise, detectives confront a most unlikely suspect.

An in-depth look at the journalists who exposed the dangers of cult leader Jim Jones.

A car belonging to a missing man erupts in a blaze, leading to clues regarding his whereabouts.

Lead investigators and family members speak about the murder of Colorado mother Kelsey Berreth, whose disappearance made national headlines after she was last seen grocery shopping on Thanksgiving in 2018.

Lead investigators and family members speak about the murder of Colorado mother Kelsey Berreth, whose disappearance made national headlines after she was last seen grocery shopping on Thanksgiving in 2018.

When Nichole Payne and her son Taylor are found dead in their home, it takes nearly a decade to unravel what happened; now, Nichole's children share what they saw the day their mother and brother were murdered.

When a patrol officer discovers a dead body in the back of a taxi, detectives must rely on a trail of digital breadcrumbs and a mysterious passenger to track the killer.

When a Philly radio personality is killed in her lavish Shore home, the years-long investigation reveals an undercover informant, an intricate murder-for-hire plot, and a vast trafficking conspiracy.

After a successful Korean-American business owner is killed during a home invasion, detectives believe his murder could be tied to a string of Philly crimes against businesses, until they uncover that the mastermind is someone much closer to home.

After a talented artist and musician goes missing, the investigation into his disappearance leads to a gruesome discovery in a historic Philly cemetery, revealing a sinister series of events.

Eduardo Valseca is taken hostage in an orchestrated abduction; Keith Morrison reflects on the family he spent years following; what happened to them might have destroyed many, but not the Valsecas.

For more than 30 years, Ohio investigators have searched for answers in the murder of 10-year-old Amy Mihaljevic; the details of the case still haunt Josh Mankiewicz and investigators, who ask for help solving the crime.

An advocate for missing and murdered Indigenous women searches for answers in the disappearance of her niece and exposes cracks in law enforcement; Andrea Canning looks back on this important story, one that became her passion project.

The children of an Oklahoma pastor survive the robbery that took their parents' lives; it's a story Keith Morrison still can't forget, and one where the very best and worst of humanity are both on full display.

When a popular graduate student is shot dead in Durham, N.C., detectives uncover a deadly love triangle; it takes a lot to surprise correspondent Josh Mankiewicz, but the claims are shocking.

A tech titan is stabbed to death in San Francisco, sparking headlines and rumors; speculators are quick to draw conclusions, but Josh Mankiewicz revisits how video evidence revealed a far more complicated truth.

When a married art teacher is shot to death in her home, police untangle a complex web of relationships, including a three-way affair; Blayne Alexander revisits the twisted motive at the center of this case.

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.

When a married art teacher is shot to death in her home, police untangle a complex web of relationships, including a three-way affair; Blayne Alexander revisits the twisted motive at the center of this case.

Keith Morrison reflects on a case; an Idaho man is sentenced to life after falsely confessing to his friend's murder, but after the true culprit is caught, a chilling twist unfolds.

When two women call 911 after hearing someone break into their apartment, their call for help holds the key to solving the mysterious murder of a young graduate student named Katie Sepich.

When two women call 911 after hearing someone break into their apartment, their call for help holds the key to solving the mysterious murder of a young graduate student named Katie Sepich.

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

After a night out in New York City with his new girlfriend, 56-year-old businessman Charles Butler simply vanishes, and his panicked children only receive confounding texts in response to their inquiries.

Ricardo Hibi overcomes a tough childhood to become a successful businessman and family man; he opens a group home to give troubled kids the same chance at success; when he's found stabbed to death, police must determine why someone would target him.

When a barefoot pregnant woman is found dead in Coney Island, the NYPD races to find her killer; it's not until detectives pit suspects against each other that a web of jealousy emerges, and the evil truth comes to light.

A young woman steps out of her local deli only to be never seen again; when she's reported missing days later, detectives from Staten Island find themselves mired in a maze of suspects and tracing her last steps before it's too late.

When a beloved North Philadelphia school teacher is ambushed in a Dunkin' Donuts drive-thru, detectives uncover a deadly plot involving jealousy, deceit, and revenge.

The investigation of a bridal shop supervisor's violent murder leads detectives to Philly's music scene to reveal a hit list, an ultimatum, and an abusive musical mastermind.

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.

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

When the body of a man is found hanging from a tree with his arms bound and FED scrawled on his chest, Kentucky State Police and the FBI must unravel a complicated mystery.

A man discovers the body of his fiancée with an apparent self-inflicted gunshot wound; her death is ruled a suicide, but authorities are puzzled when they can't find the fatal bullet; then, the discovery of the bullet turns the case upside down.

When a promising forensics student is found mutilated on a lonely stretch of Utah highway, her sheriff's department colleagues will stop at nothing to deliver justice.

Detectives attempt to trace a young woman's last steps as she leaves a casino and disappears into the night; an almost forgotten childhood memory helps find her buried in the backyard.

A dancer is murdered in her Virginia home; after interviewing a series of suspects, detectives realize the case is much more complicated than previously thought.

Robbery seems to be a plausible motive when a North Carolina man is found shot to death in a roadside ditch, but the case remains cold for years until a mysterious letter reveals a more sinister motive than anyone could have imagined.

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.

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.

A Navy veteran is brutally stabbed in his senior living community, but as detectives work to find the killer, they discover a persuasive con artist.

A town councilwoman is gunned down in her home and the only evidence left behind is a bouquet of plastic roses, but as detectives work to find the triggerman, they learn that the person calling the shots is close to home.

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

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

San Diego detectives investigate the deaths of a young woman and her 10-month-old child.

A car belonging to a missing man erupts in a blaze, leading to clues regarding his whereabouts.

An in-depth look at the journalists who exposed the dangers of cult leader Reverend Jim Jones; interviews with witnesses to murders carried out by Jones' followers.

With just over one hundred residents, the farming village of Colon, Nebraska is built on trust; when county treasurer Sharron Erickson is found murdered in her town garage, Main Street becomes a crime scene where no one can trust their neighbor.

When 20-year-old Anna Cardwell is found shot to death in her rural Alabama home, her close circle of friends mourn in disbelief. But soon speculation begins to swirl that one of their own is not who they seem.

A university for the deaf serves as a haven for its students. But when a freshman is brutally murdered in his dorm, the student body is plunged into terror. When it happens again, investigators race to uncover a connection and stop a serial killer.

When a patrol officer discovers a dead body in the back of a taxi, detectives must rely on a trail of digital breadcrumbs and a mysterious passenger to track the killer.

When a Philly radio personality is killed in her lavish Shore home, the years-long investigation reveals an undercover informant, an intricate murder-for-hire plot, and a vast trafficking conspiracy.

After a successful Korean-American business owner is killed during a home invasion, detectives believe his murder could be tied to a string of Philly crimes against businesses, until they uncover that the mastermind is someone much closer to home.

After a talented artist and musician goes missing, the investigation into his disappearance leads to a gruesome discovery in a historic Philly cemetery, revealing a sinister series of events.

When a beloved North Philadelphia school teacher is ambushed in a Dunkin' Donuts drive-thru, detectives uncover a deadly plot involving jealousy, deceit, and revenge.

The investigation of a bridal shop supervisor's violent murder leads detectives to Philly's music scene to reveal a hit list, an ultimatum, and an abusive musical mastermind.

When a promising high school track star is murdered, Philadelphia detectives zero in on her network of friends, both on and off the track, eventually uncovering the horrifying truth behind who killed her.

The stabbing murder of a 20-year-old woman in the suburbs of Philadelphia stymies detectives until a series of eerily similar murders six years later reveals a killer that has been hiding in plain sight all along.

After a young mother mysteriously disappears, all of Philadelphia unites in their efforts to find her. But as police begin peeling away the layers of her life, they discover the grisly truth behind what happened to her.

The violent murder of a young newlywed in the outskirts of Philadelphia confounds investigators for decades until the perseverance of detectives, combined with new technology, reveals her killer was closer than anyone anticipated.

When sheriff-elect Derwin Brown is gunned down just days before taking office, investigators uncover a tangled web of secrets - forcing them to confront the chilling possibility that the killer may be hiding within law enforcement's own ranks.

When a Sarasota, Florida gallery proprietor is found murdered and posed like a grisly sculpture, everyone in the renowned art community fears for their lives wondering if it could be one of their own artists putting evil on display.

The violent murder of a young newlywed in the outskirts of Philadelphia confounds investigators for decades until the perseverance of detectives, combined with new technology, reveals her killer was closer than anyone anticipated.

An alarming spike in ICU patient deaths prompts a head nurse to investigate the cause; after examining charts recorded by the hospital staff, her findings send shockwaves through the small Indiana town.

Dialysis patients' weekly treatments go from routine to fatal without explanation; police shut down the Lufkin, Texas facility to investigate what, or who, may have turned lethal.

After an orderly is arrested for killing a patient at a Cincinnati hospital, a local reporter gets a tip that leads him to uncover new information about a string of horrifying deaths.

The survivor of a horrible attack is convinced police have the wrong suspect.

The survivor of a horrible attack is convinced police have the wrong suspect.

After filming wraps on an indie horror movie, the cast members learn their lead actress is not who she says she is and has been charged with killing her uncle.

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

He was a wealthy executive and a doting dad who was in fear for his life. Then, he was shot dead. The case made headlines because of its unusual defense, with the accused arguing he was too obese to carry out the killing. Would the jury believe it?

The long-lost confession tapes of the man who claimed to be the Boston Strangler have been uncovered. Suppressed for decades, these exclusive tapes reignite doubts about his confession, inspiring experts to reexamine the evidence and suspects.

A man goes missing from an idyllic Idaho town, leaving detectives puzzled and a daughter driven to find her father; as the investigation unravels, a truth is revealed that is stranger than fiction and a killer no one ever sees coming.

A missing young father in Utah returns home and confesses to an affair, but when he vanishes again a short time later, it quickly seems something more sinister is at play.

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

After a devoted father is found murdered in his home, Indiana investigators learn just how manipulative and deadly a person's envy can be.

After a young California father is ambushed on the steps of his own home, Santa Clara detectives uncover a complex murder plot that ultimately leads them to an unexpected mastermind who's been hiding in plain sight all along.

A family man is gunned down on the side of the road in a small town in Texas, and detectives unearth a perpetrator who's hiding more than one shocking skeleton in the closet.

After a loving father is found dead in the bedroom of his Oklahoma home by his ex-wife, Broken Arrow police must unpack a complex family dynamic and a loyalty based on greed in order to get answers.

When a father is found shot to death in his country home, the family immediately accuses the victim's on-again/off-again ex-spouse; however, evidence soon suggests there might be more players to blame than simply a woman scorned.

When authorities learn an Ohio woman has been missing for nearly half a year, all signs point to foul play. After tracking the victim's bank cards across the country, detectives zero in on a couple trying to outrun their vicious secret.

The First Baptist Church of Madisonville, Kentucky is shocked when long time parishioner Anna May Branson leaves Sunday service only to be murdered in her home moments later. Investigators wonder if her killer is in the pews pretending to be a saint.

After three Atlanta men are gunned down in the span of three days, detectives connect the murders to two exotic dancers; knowing only their stage names, investigators race to find the women and uncover the motive behind this devastating crime spree.

When authorities learn an Ohio woman has been missing for nearly half a year, all signs point to foul play. After tracking the victim's bank cards across the country, detectives zero in on a couple trying to outrun their vicious secret.

The First Baptist Church of Madisonville, Kentucky is shocked when long time parishioner Anna May Branson leaves Sunday service only to be murdered in her home moments later. Investigators wonder if her killer is in the pews pretending to be a saint.

When sheriff-elect Derwin Brown is gunned down just days before taking office, investigators uncover a tangled web of secrets - forcing them to confront the chilling possibility that the killer may be hiding within law enforcement's own ranks.

Crosby, Tenn., is shocked when a beloved father and pastor is found dead outside a ransacked house; police question if this was a robbery gone wrong until an unexpected witness comes forward to reveal the disturbing truth.

He is the serial killer you've never heard of ... until now. In 1973, 22-year-old Doug Gretzler embarked on a cross-country road trip that spiraled into a brutal killing spree. In just three weeks, he and his accomplice, 28-year-old Willie Steelman, murdered 17 people. Their motive? A mystery that has left family members, law enforcement and experts baffled for decades. Drawing from first person interviews and over 500 hours of recorded conversations with Gretzler himself, hear his darkest confessions and the chilling psychology behind his crimes for the very first time.

After Todd Chance is murdered, police follow a trail of video evidence as they work to track down the killer.

After Todd Chance is murdered, police follow a trail of video evidence as they work to track down the killer.

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

After a young woman's body is discovered at a trash facility, a detective promises justice and comes face-to-face with a serial killer; Keith Morrison revisits the case.

A woman finds her father, a former FBI agent, murdered at his house; after digging into his past, police suspect the killer might be close to home; for Josh Mankiewicz, the toxic marriage at the heart of this case makes it unforgettable.

When a Kansas prisoner escapes in a van driven by a volunteer, investigators scramble to track down the pair; Andrea Canning likens this story to a bunch of Hollywood blockbusters rolled into one, but it's as real as it gets.

The heir to a legendary hotel is brutally murdered, and detectives learn he had no shortage of enemies; Dennis Murphy takes a fresh look at this extraordinary investigation, a hunt for a killer he calls the most ruthless he's ever seen.

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.

A reconciliation dinner ends in murder; the cousin-in-law is identified as the killer.

The murder of an 18-year-old woman is investigated.

In 2011, the shooting death of a family man in a parking garage is investigated.

The discovery of a burnt body triggers an investigation that unearths a scandalous tale of lust, lies and love triangles.

While investigating the disappearance of two town locals, detectives find themselves in the midst of a tangled web of polygamists.

An aspiring preacher and his wife become the primary suspects when their daughter-in-law vanishes without a trace.

When a beloved neighbor perishes in a suspicious fire, the resulting investigation exposes a deadly conspiracy and two unlikely suspects.

A welfare check confirms the worst when a woman is found brutally murdered on her couch; the ensuing investigation leads authorities from Oklahoma to Arkansas where conflicting stories of a crime motivated by greed and jealousy are uncovered.

When authorities learn an Ohio woman has been missing for nearly half a year, all signs point to foul play. After tracking the victim's bank cards across the country, detectives zero in on a couple trying to outrun their vicious secret.

The violent murder of a young newlywed in the outskirts of Philadelphia confounds investigators for decades until the perseverance of detectives, combined with new technology, reveals her killer was closer than anyone anticipated.

The murder of a husband and father exposes a scandalous love triangle and triggers an investigation into one of the town's wealthiest residents.

When an aspiring actress is found brutally murdered, authorities discover family secrets and a forbidden love affair.

Farmer couple brutally murdered, setting off an investigation that exposes a startling motive fueled by lust and desperation.

The First Baptist Church of Madisonville, Kentucky is shocked when long time parishioner Anna May Branson leaves Sunday service only to be murdered in her home moments later. Investigators wonder if her killer is in the pews pretending to be a saint.

An Oregon grandmother found wounded on the roadside tells rescuers that her husband is missing after a boat sale went awry; a manhunt ensues but as authorities investigate, granny's wild story unravels to reveal a darker truth.

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

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.

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

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.

A wealthy entrepreneur is shot in his home; there are many suspects but with only suspicion to go on, it takes investigators over seven years to nab his killer.

Lust and greed are at the core of the case of a wife and mother who is found dead in her pool; investigators are quick to uncover a web of affairs, lies and fraud that lead them to her killer.

Kelly and Yolanda must find the person who brutally stabbed a woman to death amongst multiple suspects.

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 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.

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.

When a promising high school track star is murdered, Philadelphia detectives zero in on her network of friends, both on and off the track, eventually uncovering the horrifying truth behind who killed her.

The stabbing murder of a 20-year-old woman in the suburbs of Philadelphia stymies detectives until a series of eerily similar murders six years later reveals a killer that has been hiding in plain sight all along.

It's a mystery that defies easy answers, and "Dateline" has been following it for more than a decade; Steven Avery and his teenage nephew were convicted of killing Teresa Halbach; now, Andrea Canning shares her insight into the controversial case.

When former Sen. Linda Collins of Arkansas is found fatally stabbed outside her home, detectives investigate if her murder is connected to her political career or her personal life. The victim's children speak out about the case.

Texas police hunt frantically for a brutal rapist. No one knows where he'll strike next, but given the increasingly violent nature of his crimes, he must be found soon.

When detectives find a mismatched button in relation to a woman's death, they know they can follow the clue back to the killer.

A woman heads home after church, but never makes it there alive, triggering a homicide investigation.

Volunteers and police spend weeks searching for a missing girl. A psychic later leads them to a field where the body was found.

Forensic investigators try to stop a killer who is apparently responsible for two slayings in a community in South Carolina.

When DNA proves that a man who practically admits to a brutal attack is innocent, police wonder why he is willing to take the blame.

When a businessman is murdered, motives and suspects are plentiful. Was it simply a disgruntled employee or client? Or do some racy photos hold the clue to the crime?

A family break turns into a nightmare when the wife is found face-down in a lake; with no idea whether it was murder, an accident or suicide, police turn to a new forensic technique.

When friends see a woman in the back of a car flailing her arms and screaming, they assume she is having fun, but when they later come upon a jacket and a pool of blood, they realize they witnessed an abduction in progress.

An attack on a couple's home leaves the husband dead, the wife gravely injured and their son as a prime suspect; hundreds of miles away, a DNA sample may lead to the killer.

The violent murder of a young newlywed in the outskirts of Philadelphia confounds investigators for decades until the perseverance of detectives, combined with new technology, reveals her killer was closer than anyone anticipated.

After a young mother mysteriously disappears, all of Philadelphia unites in their efforts to find her. But as police begin peeling away the layers of her life, they discover the grisly truth behind what happened to her.

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

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

The forgotten murder of a policeman's wife open's up years later.

An exhumation is conducted when a year after Diana Burrow dies of natural causes, a rumor begins to spread in the small town of St. Pauls, N.C., that she was murdered.

Mystery shrouds the disappearance of wife and mother Danna Dever, but the discovery of skeletal remains in a California prairie may be the key to finding out what happened.

An Army veteran kills the head of his girlfriend's household after confronting him about sexually assaulting the young woman; after hearing a recording of the fight, investigators must decide if this was vigilante justice or self-defense.

Wealthy dentist Kirk Turner tells police he killed his wife, Jennifer, with a pocket knife after she impaled him with a spear.

When Cathy Torrez never comes home after work, her family fears the worst; an intensive search ends after her car is found, with her body in the trunk; it takes years to get to the truth.

In Wisconsin, Steven Avery and his nephew, Brendan Dassey, are convicted of killing Teresa Halbach in a case that defies easy answers.

Fitness executive Nicole Pietz is married to the man of her dreams, and then she goes missing after failing to show up for dinner with her husband and friends.

Tara Ord is a beautiful young woman with big dreams, then she vanishes without a trace; it will take years for determined cold case detectives to uncover the long buried clue that blows this case wide open.

A young man from small town Indiana heads to Japan where he falls for a beautiful woman; then, they are caught up in one of the biggest natural disasters in history.

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.

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.

After a 25-year-old mother is gunned down in broad daylight by a murderer wearing a disguise, detectives confront a most unlikely suspect.