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.

A young woman is found dead on a golf course in the Bahamas; the grass on that course is so distinctive that it had evidentiary value; the evidence leds police to two suspects; each blamed the other, and they have to find out who the killer is.

A beloved Staten Island teacher is found dead in the home she shared with her husband; an unknown number in her cell phone leads investigators to reveal troubles in her seemingly idyllic life -- and to ultimately unearth her killer.

A teenager goes missing after an evening of horseback riding; her body is found a month later, three miles from her home; the killer unknowingly leaves a trace of evidence behind, tiny but unmistakable clues that pointed to him and him alone.

When a popular disc jockey is found murdered in a community garden, police swing into action; a sniffer dog and a blood spatter expert led police to the killer and he'd been much closer than they realize.

The murders of two young women near a Phoenix canal remain unsolved for more than 20 years until a team of cold case detectives take on the case and investigate a man known as the Zombie Hunter.

Investigators unravel a twisted tale of lust, greed and deception after a woman claims her husband was gunned down by intruders.

Three seemingly unrelated deaths proved to be serial murders; the killer had been careful, he uses poison which had no taste or odour, fortunately for investigators, it also has a unique chemical signature.

A man is murdered in his sleep but no fingerprints are anywhere to be found; a shoe impression outside could lead to the killer.

With very little else to go on, investigators find that a show impression puts them on the right track to finding a killer in Lansing, Mich.

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

The owner of a restaurant is killed; investigators uncover tales of debt and deceit, but the case remains open, until one detective gets inspired by an earlier episode of "Forensic Files," and looks for clues in an empty holster.

Serial arsonist on the loose leaves no evidence.

A man becomes the prime suspect in his wife's death after forensic science raises questions about her apparent suicide.

After police discovers the burned body of a missing Miami man at the edge of the Florida Everglades, the wife of a local supermarket mogul comes forward to reveal a secret and possible lead.

While responding to a house fire in New Jersey, firefighters discover the burned remains of the homeowner in the basement; new interviews and legal developments about the latest twists and turns in the case.

Rocky Mountain National Park rangers question whether a woman's fatal fall was an accident or the result of an act of violence.

Rocky Mountain National Park rangers question whether a woman's fatal fall was an accident or the result of an act of violence.

A father is murdered in his bed, in the middle of the night; it seems strange to investigators that no one else in the house is hurt, including his new wife who was sleeping by his side; there are three witnesses in the house but no one sees a thing.

It is just before Halloween; Joel Lovelien and his fiancé head to a local bar packed with people in costume; Joel steps outside and walks into a troubling mystery.

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

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

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.

Lead detectives break their silence on the investigation into once-prominent South Carolina attorney Alex Murdaugh.

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

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

When a pediatric dentist is found dead, police uncover a complex plot and their suspect leads investigators on an international manhunt; the lead detective speaks out for the first time.

When Leslie Neulander dies after what seems like an accidental fall in the shower, her book club friends join forces to seek justice on her behalf; Andrea Canning reflects on some of the most determined women she's ever met.

A devoted mother is found shot to death in her minivan; the case stays cold until old memories resurface and new revelations come to light, dividing her Florida family.

An apparent home invasion in Minnesota leaves Heidi Firkus dead and her husband hospitalized; for Blayne Alexander, getting to know Heidi through loved ones was a privilege; for investigators, learning about Heidi helps solve the 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.

A series of reports chosen by "Dateline" correspondents that answers the question they most often get asked -- what their most memorable story is and why.

After a plastic surgeon and local musician is murdered in his Asheville home, investigators uncover a trail of clues pointing to an unlikely killer; new details emerge from exclusive TV interviews with insiders close to the case.

After a woman is murdered, a secret is exposed but a mystery still looms; Andrea Canning re-examines the story she first covered years ago; new developments lead to an unexpected conclusion and an interview you have to see to believe.

The investigation into a home invasion involving a local business owner takes a turn when an unlikely witness comes forward; new details emerge from interviews.

A mother is found dead in a house fire, but an autopsy reveals a brutal murder; the case goes cold until an unexpected confession sheds new light; Blayne Alexander looks back at a family shattered by loss, but determined to uncover the truth.

A beloved Staten Island teacher is found dead in the home she shared with her husband; an unknown number in her cell phone leads investigators to ultimately unearth her killer.

A former ballerina shoots her husband in what she alleges was an act of self-defense; the ensuing investigation and dramatic trial spark protests and receives national attention.

A sneak preview of Oxygen's new series, Killer Grannies.

Two murders in Toronto ignite an investigation that spans four decades, but breakthroughs in investigative genetic genealogy help crack the case; Josh Mankiewicz revisits the mystery that took him to the coldest and most remote place he's ever been.

The murders of two young women near a Phoenix canal remain unsolved for more than 20 years until a team of cold case detectives take on the case and investigate a man known as the Zombie Hunter.

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

When a pharmacist is found shot dead, investigators go on a 15-year hunt for his killer; for Andrea Canning, this story has unique locations, fascinating potential suspects and riveting plot twists, but says the victim makes this mystery special.

A group of women help bring down a smooth-talking serial predator turned killer who lured young women with promises of fame and fortune.

A pregnant woman vanishes before her own baby shower and her worried family raises the alarm as detectives unravel a chilling mystery; for Josh Mankiewicz, it was a heartbreaking case that stayed with him long after the cameras stopped rolling.

A series of reports chosen by "Dateline" correspondents that answers the question they most often get asked -- what their most memorable story is and why.

A man from Iowa is shot to death while sleeping in bed next to his fiancee; coincidences and quick thinking lead to surprising information regarding the killer's motive.

A man from Iowa is shot to death while sleeping in bed next to his fiancee; coincidences and quick thinking lead to surprising information regarding the killer's motive.

In 1994, convicted murderer Randolph Dial escapes from a prison in Oklahoma and takes the deputy warden's wife, Bobbi Parker, with him, then, 10 years later, Parker is found living with Dial on a farm in Texas.

A path to murder ignites after Faye befriends a mysterious woman, leaving the viewer guessing until the very end who is the predator and who is the prey.

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

A young woman from a troubled past falls for a man who offers her the stability she needs. After they start a home together their new neighbors drive a wedge between them. Jealousy, secrets and lies lead to a shocking murder.

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

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

A young teacher moves into the Gates House to escape a volatile relationship and finds herself caught between an ex-con and his jealous girlfriend; when she befriends a shy newcomer, it sets them all on a path that ends in murder.

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.

A vivacious young woman escapes to a small town and befriends an emotionally scarred woman, whose possessive best friend becomes very jealous; the addition of a handsome stranger starts a chain of events that ends in murder.

When Leslie Neulander dies after what seems like an accidental fall in the shower, her book club friends join forces to seek justice on her behalf; Andrea Canning reflects on some of the most determined women she's ever met.

A beloved Oklahoma father is discovered murdered inside his home and the search for his killer uncovers a forbidden romance and a deadly double-cross.

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.

An apparent home invasion in Minnesota leaves Heidi Firkus dead and her husband hospitalized; for Blayne Alexander, getting to know Heidi through loved ones was a privilege; for investigators, learning about Heidi helps solve the case.

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 a wealthy couple falls victim to a deadly home invasion, the search for the killers exposes both a twisted relationship and a family betrayal no one saw coming.

After a mother is found murdered in her Virginia home, her son embarks on a 20-year quest for justice; for Josh Mankiewicz, this cold case was one of the strangest he's ever covered. He looks back at the reasons why.

When a beloved grandmother falls victim to a brutal crime, the search for her killers reveals a torrid romance between two young lovers willing to do anything to get what they desire.

The unexplained disappearances of a young mother and her two sons in 1980 lead investigators on a three-decade quest for justice, exposing multiple murders and a homicidal love affair that left untold suffering and carnage in its wake.

After a woman is murdered, a secret is exposed but a mystery still looms; Andrea Canning re-examines the story she first covered years ago; new developments lead to an unexpected conclusion and an interview you have to see to believe.

Trick-or-treaters in a small Indiana town have no idea that the sweet grandmother passing out candy is also hiding a deadly secret in her garage.

The horrific murder of a young mother on Halloween night sends California investigators on the hunt for a costumed killer.

A mother is found dead in a house fire, but an autopsy reveals a brutal murder; the case goes cold until an unexpected confession sheds new light; Blayne Alexander looks back at a family shattered by loss, but determined to uncover the truth.

The holidays are meant to be a time of festive cheer when family and friends come together to celebrate the season; but when family members are forced to occupy the same space for too long, the joy can often morph into anger and resentment.

A former ballerina shoots her husband in what she alleges was an act of self-defense; the ensuing investigation and dramatic trial spark protests and receives national attention.

On Halloween night a knife-wielding intruder attacks and kills two roommates and leaves another lucky to be alive; although the story is reminiscent to the plot of a horror film, the terror is all too real.

Two murders in Toronto ignite an investigation that spans four decades, but breakthroughs in investigative genetic genealogy help crack the case; Josh Mankiewicz revisits the mystery that took him to the coldest and most remote place he's ever been.

Halloween becomes a real-life horror story when police discover a beloved mother of four murdered; the panic intensifies as the investigation turns into a case populated by demons, masks and a potential psychopath on the loose.

After a massive Halloween bash ends with a young woman's mysterious disappearance, a tiny farming town fears that evil stalks its fields.

When a pharmacist is found shot dead, investigators go on a 15-year hunt for his killer; for Andrea Canning, this story has unique locations, fascinating potential suspects and riveting plot twists, but says the victim makes this mystery special.

As Halloween approaches in southern California, a family of three mysteriously goes missing; during their search for answers, investigators unearth a haunting message that points to murder.

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 pregnant woman vanishes before her own baby shower and her worried family raises the alarm as detectives unravel a chilling mystery; for Josh Mankiewicz, it was a heartbreaking case that stayed with him long after the cameras stopped rolling.

When Britney Ujlaky disappears, a small Nevada town bands together to track down an unknown cowboy who's a potential suspect; Some stories are memorable for their twists, people or locations; this one checks all three boxes.

After Johnny Altinger vanished, the trail of clues led investigators to a young director; detectives feared the case was a hoax staged by a master storyteller.

Detectives worry that the case is a hoax staged by a master storyteller after Johnny Altinger vanishes and the trail of clues leads investigators to a young director.

A risky undercover operation in a rough prison could expose a suspected serial killer's secrets.

A path to murder ignites after Faye befriends a mysterious woman, leaving the viewer guessing until the very end who is the predator and who is the prey.

Stuntman Garrett Warren was accustomed to living on the verge of death, but no amount of Hollywood violence can compare when he finds himself shot four times; when the smoke clears, investigators find themselves in a real Hollywood mystery.

A path to murder ignites after Faye befriends a mysterious woman, leaving the viewer guessing until the very end who is the predator and who is the prey.

A couple's anniversary celebration ends in murder during what appears to have been a home invasion, but investigators believe the suspect might be connected to the victim.

A young woman from a troubled past falls for a man who offers her the stability she needs. After they start a home together their new neighbors drive a wedge between them. Jealousy, secrets and lies lead to a shocking murder.

A beloved Staten Island teacher is found dead in the home she shared with her husband; an unknown number in her cell phone leads investigators to ultimately unearth her killer.

A young teacher moves into the Gates House to escape a volatile relationship and finds herself caught between an ex-con and his jealous girlfriend; when she befriends a shy newcomer, it sets them all on a path that ends in murder.

A former ballerina shoots her husband in what she alleges was an act of self-defense; the ensuing investigation and dramatic trial spark protests and receives national attention.

A vivacious young woman escapes to a small town and befriends an emotionally scarred woman, whose possessive best friend becomes very jealous; the addition of a handsome stranger starts a chain of events that ends in murder.

A beloved Oklahoma father is discovered murdered inside his home and the search for his killer uncovers a forbidden romance and a deadly double-cross.

After a young Army veteran disappears, detectives uncover a cryptic 911 call placed 11 days before she went missing, which exposes a twisted story -- and the truth.

A beloved Oklahoma father is discovered murdered inside his home and the search for his killer uncovers a forbidden romance and a deadly double-cross.

To prevent the exposure of a twisted secret, a seemingly solid marriage between two deeply religious people is destroyed, and two lives are lost forever in the cold-blooded killings of a mother and daughter.

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

The start of the worldwide COVID-19 pandemic coincides with the disintegration of a once-loving marriage, leading to a cross-country chase to ensnare a vicious murderer.

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

Two young people are set up by their parents, leading quickly to love and marriage, but it is destroyed by a mother-in-law who orders the killing of a woman in broad daylight.

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.

An aspiring military officer disappears suspiciously from her Virginia home, and two years later, her husband vanishes when he comes under suspicion.

When a wealthy couple falls victim to a deadly home invasion, the search for the killers exposes both a twisted relationship and a family betrayal 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.

When a beloved grandmother falls victim to a brutal crime, the search for her killers reveals a torrid romance between two young lovers willing to do anything to get what they desire.

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

The unexplained disappearances of a young mother and her two sons in 1980 lead investigators on a three-decade quest for justice, exposing multiple murders and a homicidal love affair that left untold suffering and carnage in its wake.

Trick-or-treaters in a small Indiana town have no idea that the sweet grandmother passing out candy is also hiding a deadly secret in her garage.

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.

Trick-or-treaters in a small Indiana town have no idea that the sweet grandmother passing out candy is also hiding a deadly secret in her garage.

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 horrific murder of a young mother on Halloween night sends California investigators on the hunt for a costumed killer.

Unraveling two haunting cases: a teenage boy stumbles upon a real-life horror inside his home on Halloween morning, while a young single mother mysteriously vanishes after failing to show up for work-leaving investigators to suspect murder.

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?

The holidays are meant to be a time of festive cheer when family and friends come together to celebrate the season; but when family members are forced to occupy the same space for too long, the joy can often morph into anger and resentment.

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?

On Halloween night a knife-wielding intruder attacks and kills two roommates and leaves another lucky to be alive; although the story is reminiscent to the plot of a horror film, the terror is all too real.

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.

On Halloween night a knife-wielding intruder attacks and kills two roommates and leaves another lucky to be alive; although the story is reminiscent to the plot of a horror film, the terror is all too real.

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.

Halloween becomes a real-life horror story when police discover a beloved mother of four murdered; the panic intensifies as the investigation turns into a case populated by demons, masks and a potential psychopath on the loose.

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?

After a massive Halloween bash ends with a young woman's mysterious disappearance, a tiny farming town fears that evil stalks its fields.

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.

As Halloween approaches in southern California, a family of three mysteriously goes missing; during their search for answers, investigators unearth a haunting message that points to murder.

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.

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

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.

An aspiring military officer disappears suspiciously from her Virginia home, and two years later, her husband vanishes when he comes under suspicion.

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

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

The legendary Fontainebleau Hotel in Miami Beach, Fla., is the backdrop for a mystery involving the murders of wealthy heir Ben Novack and his mother, Bernice.

Stuntman Garrett Warren was accustomed to living on the verge of death, but no amount of Hollywood violence can compare when he finds himself shot four times; when the smoke clears, investigators find themselves in a real Hollywood mystery.

A couple's anniversary celebration ends in murder during what appears to have been a home invasion, but investigators believe the suspect might be connected to the victim.

A beloved Staten Island teacher is found dead in the home she shared with her husband; an unknown number in her cell phone leads investigators to ultimately unearth her killer.

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 former ballerina shoots her husband in what she alleges was an act of self-defense; the ensuing investigation and dramatic trial spark protests and receives national attention.

After a young Army veteran disappears, detectives uncover a cryptic 911 call placed 11 days before she went missing, which exposes a twisted story -- and the truth.

When a beloved family man is found brutally murdered in his home, authorities must follow a trail of clues that exposes a strange and unlikely killer guided by gluttonous urges that led to murder.

To prevent the exposure of a twisted secret, a seemingly solid marriage between two deeply religious people is destroyed, and two lives are lost forever in the cold-blooded killings of a mother and daughter.

The 1988 roadside murder of a man in Virginia sends investigators down a path fraught with doubts and dead ends, until a long-buried secret is unearthed hundreds of miles away revealing decades-old secrets.

The start of the worldwide COVID-19 pandemic coincides with the disintegration of a once-loving marriage, leading to a cross-country chase to ensnare a vicious murderer.

When a man is found shot to death on a suburban street, a wild investigation commences, featuring a high-speed car chase, dangerous gang members and a twisted murder plot that betrays family loyalties.

Two young people are set up by their parents, leading quickly to love and marriage, but it is destroyed by a mother-in-law who orders the killing of a woman in broad daylight.

When a deadly rumor is stirred up among friends and acquaintances, it sets off an explosion of brutal violence so gruesome that not even a house fire can hide the truth.

An aspiring military officer disappears suspiciously from her Virginia home, and two years later, her husband vanishes when he comes under suspicion.

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

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.

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

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

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

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.

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

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.

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

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?

Convicted killer Misook Wang sits down to detail her mother-in-law's murder; Wang's ex-lover comes forward to discuss his daughter's death, and why he thinks Wang was involved.

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

A 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 sneak preview of Oxygen's new series, Killer Grannies.

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

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.

In a jailhouse interview, Traci Wolfe reveals the catalyst that sparked an uncontrollable rage and ended in her husband's gruesome death; holding nothing back, she now reflects on the crime that landed her in prison for life.

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?

When a concerned co-worker discovers a man executed in his home in a well to do neighbourhood police are sent down a winding road of greed, drugs, and heartbreak to uncover a spiteful murderer.

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.

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

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

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

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

When a Kansas mother is discovered brutally murdered in her own home, investigators fear that her missing teenage daughter has met a similar fate; They scour the area for clues until rumors guide them to an unlikely mastermind.

An aspiring military officer disappears suspiciously from her Virginia home, and two years later, her husband vanishes when he comes under suspicion.

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

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

A woman accused of attempting to hire a hit man to kill her husband.

A daughter finds her father, a former FBI agent, murdered at his house; police dig into the man's past and begin to think the key to the mystery might be quite close to home.

When film executive Gavin Smith vanishes, Los Angeles detectives search for clues amid reported sightings and suspicious circumstances.

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.

When a beloved family man is found brutally murdered in his home, authorities must follow a trail of clues that exposes a strange and unlikely killer guided by gluttonous urges that led to murder.

The 1988 roadside murder of a man in Virginia sends investigators down a path fraught with doubts and dead ends, until a long-buried secret is unearthed hundreds of miles away revealing decades-old secrets.

When a man is found shot to death on a suburban street, a wild investigation commences, featuring a high-speed car chase, dangerous gang members and a twisted murder plot that betrays family loyalties.

When a deadly rumor is stirred up among friends and acquaintances, it sets off an explosion of brutal violence so gruesome that not even a house fire can hide the truth.

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

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

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

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

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

Convicted killer Misook Wang sits down to detail her mother-in-law's murder; Wang's ex-lover comes forward to discuss his daughter's death, and why he thinks Wang was involved.

A sneak preview of Oxygen's new series, Killer Grannies.

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

In a jailhouse interview, Traci Wolfe reveals the catalyst that sparked an uncontrollable rage and ended in her husband's gruesome death; holding nothing back, she now reflects on the crime that landed her in prison for life.

When a concerned co-worker discovers a man executed in his home in a well to do neighbourhood police are sent down a winding road of greed, drugs, and heartbreak to uncover a spiteful murderer.

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

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

When a Kansas mother is discovered brutally murdered in her own home, investigators fear that her missing teenage daughter has met a similar fate; They scour the area for clues until rumors guide them to an unlikely mastermind.

The murder of a California mother beloved by four men reopens a mystery surrounding another young woman's death that occurred decades earlier.

The murder of a California mother beloved by four men reopens a mystery surrounding another young woman's death that occurred decades earlier.

An investigation of a woman found murdered in Fort Worth, Texas.