A New Hampshire town reels after police arrest four teenagers for robbing and murdering a 42-year-old mother and maiming her 11-year-old daughter; detectives uncover two suspects with the characteristics of sadistic psychopaths.

A road rage incident turns deadly as an elderly man is beaten to death by a teenager who claims he was acting in self-defense; detectives not only find holes in his story but uncover that he is a remorseless and manipulative psychopath.

A young woman makes a frantic 911 call about a brutal home invasion, which results in the shooting of her mother and father; as police interview her, they uncover a secret double life and an elaborate web of lies spun by a maniacal psychopath.

A gunman shoots a man dead as he runs along a country road, and first responders find a witness standing next to the body with a strange story to tell; detectives unravel the lies of a callous psychopath who takes out his frustrations in bloodshed.

When Shaquoia and Imani first meet Isiah, they sense his evil; they don't know why their mother would date a man like him; Shaquoia does all she can to protect her siblings from Isiah's rage, but his cruelty and obsession would destroy the family.

As children, Tabitha and Ann endure their brother Terry's twisted games; as adults, they try to cut ties, but their mother, Edwardyne, clings on and is always willing to give him one more chance.

As a child, Deon knows her stepfather, Edward, is deeply controlling; he instills fear into the family with his rage fits; after Deon's mother finally leaves him, Edward tries to regain control of the family with a plan to eliminate them all.

People recount their horrifying true stories about living side-by-side with sociopathic friends or family who go on to commit heinous crimes.

From police officers to pastors, doctors to business leaders, they are the pillars of communities; when power seduces and corrupts, it opens the door to evil, and some will stop at nothing, even murder, to protect themselves.

Larry Nassar becomes the go-to doctor for treating injured gymnasts after he helps the USA win Olympic gold; young women flock to him for rehabilitation; it takes years before the true cost of his medal-winning techniques comes to light.

A respected police Lieutenant, Billy Fields, fails to solve the murder of a young mother; years later, the reason why becomes clear.

Teen Alicia DeBolt goes missing shortly after making the cheer squad; police question members of the football team and fellow cheerleaders, but the truth behind this mystery is more sinister than anyone in her small Kansas town could have imagined.

The family of a high school cheerleader finds her murdered in her room the night after the homecoming dance; detectives surmise that she knew her killer, and because so many people are back in town for the big football game, everybody is a suspect.

On Thanksgiving weekend, a gunshot kills a former high school football star turned referee on his doorstep in broad daylight; in the world of Texas football, police focus on the possibility that a disgruntled parent or fan followed him home.

In 2008, someone guns down Pahokee High School's star football player, Norman Pooh Griffith, outside a homecoming dance in Belle Glade, Fla., home to Pahokee's biggest football rivals.

When Kathy Horn disappears, some believe she's following the Grateful Dead; others think she was sacrificed during a Wicca initiation; her mom wonders if she's run off with an older boyfriend.

Sean Combs' rise to power is meteoric, transforming American culture; his empire seems untouchable, but a reexamination of the music mogul's early rise reveals signs of trouble.

After a night out in a downtown Denver nightclub, Kenia Monge wanders the streets without a purse or phone; her journey leads to encounters with several men --some good, and one who drives a creepy white van.

Reaching beyond music, Diddy's business empire seems untouchable; his alleged mistreatment of women and serial arrests avoid public scrutiny; in 2001, Combs faces his most perilous test when he stands trial on felony charges after a shooting.

A couple moves to a quiet North Carolina town and revels in their neighbors' warm welcome; personalities soon begin to clash until one bitter argument leads to an act so terrible the community will never recover.

Programming to be announced.

Combs changes his name and rises on Broadway and reality TV, reaching billionaire status; people allege mistreatment behind his empire including body shaming, physical abuse and sexual assault.

Meredith Emerson decides to celebrate the new year by hiking on Georgia's Blood Mountain with her dog, Ella, but when Meredith goes missing and Ella is found 60 miles away, an all-out search begins.

Sean Combs changes his name to P. Diddy and rises to billionaire status; behind his empire, people have come forward with dark allegations.

After a night out in a downtown Denver nightclub, Kenia Monge wanders the streets without a purse or phone; her journey leads to encounters with several men --some good, and one who drives a creepy white van.

Sean Combs' rise to power is meteoric, transforming American culture; his empire seems untouchable, but a reexamination of the music mogul's early rise reveals signs of trouble.

A couple moves to a quiet North Carolina town and revels in their neighbors' warm welcome; personalities soon begin to clash until one bitter argument leads to an act so terrible the community will never recover.

Programming to be announced.

Reaching beyond music, Diddy's business empire seems untouchable; his alleged mistreatment of women and serial arrests avoid public scrutiny; in 2001, Combs faces his most perilous test when he stands trial on felony charges after a shooting.

After a night out in a downtown Denver nightclub, Kenia Monge wanders the streets without a purse or phone; her journey leads to encounters with several men --some good, and one who drives a creepy white van.

Combs changes his name and rises on Broadway and reality TV, reaching billionaire status; people allege mistreatment behind his empire including body shaming, physical abuse and sexual assault.

When Kathy Horn disappears, some believe she's following the Grateful Dead; others think she was sacrificed during a Wicca initiation; her mom wonders if she's run off with an older boyfriend.

Sean Combs changes his name to P. Diddy and rises to billionaire status; behind his empire, people have come forward with dark allegations.

The disappearance of Susan Powell begins with a mysterious middle-of-the-night camping trip; an investigation reveals a woman who feared for her life and a family filled with secrets.

The disappearance of Susan Powell begins with a mysterious middle-of-the-night camping trip; an investigation reveals a woman who feared for her life and a family filled with secrets.

When a woman is found brutally murdered in her home, all signs point to a local troublemaker, then more bodies start piling up, making police realize they may be dealing with a serial killer, who is preying on the town's most vulnerable citizens.

In Alexandria, Va., a sheriff's wife answers the door to a blaze of gunfire, causing the community to buzz with theories; then, more citizens are shot at their front doors, leaving everyone wondering who could be next.

In Orange County, Calif., four men are stabbed by a mystery man in a month's time; no one makes a connection to the gruesome double murder of a woman and her son two months earlier except the man sitting in prison for killing his own family.

After multiple homicides occur along Virginia's Colonial Parkway, authorities task Det. Danny Plott with finding a serial killer; investigators uncover a pattern at the crime scenes about the killer's method, becoming the key to solving the case.

Deep in the kudzu of Alabama, police get a call about the body of a young man burned beyond recognition; Detective Kevin Palmer turns to the victim's phone records and picks up on a plot to lure the victim.

Two employees of Dayton, a bar in Ohio, are beaten to death; on the case, Det. Doyle Burke investigates a series of bizarre clues, including a citywide KKK rally and a mysterious confession letter from The Devil postmarked from Hell.

Forty-year-old Jamie Baker leaves her family behind when someone shoots and kills her with a bullet through the back; the mystery deepens when police dig into her last moments and uncover what transpired the night of her death.

The town of Fort Smith, Ark., reels when an elderly, retired school teacher turns up dead, bludgeoned to death with a hammer no fewer than 36 times; when the person responsible receives justice, an unlikely perpetrator comes to light.

Donald Lewis is a popular musician who, along with one of his employees, mysteriously disappears from the jazz club he owns.

Ben Renick is building an empire as a world-renowned breeder of exotic snakes; he has fame, fortune and a young family to share it with, but little does he know, someone he loves is hatching a venomous plot.

Family comes first to grandparents Ron and Kay Wilkson; though they may not have much money, their growing brood always know how to make their own fun; something evil is prowling close to home and not everyone makes it out alive.

A home invasion in California leaves a family shattered and detectives scrambling for answers; as investigators hunt down the perps over several years, they join the dots to outline an evil plot born from greed and a need for total control.

Rowena Irani, a Pakistani immigrant, aspires to be a teen psychologist until a pathological love connection shatters everything.

Mark Eric and Sherri Ponsati have a picture perfect life, and the arrival of two children completes their family; when Mark Eric reports that Sherri has had a tragic accident, their world falls apart.

Friends and family of some of Ted Bundy's victims speak for the first time; audio archives from the serial killer offer an insight into his mind.

A concerned mother reports her 24-year-old son missing, as he fell under the spell of a 47-year-old widowed woman; detectives soon realize she's a sexual psychopath who has claimed the lives of more than one admirer.

Friends and family of some of Ted Bundy's victims speak for the first time; audio archives from the serial killer offer an insight into his mind.

A concerned mother reports her 24-year-old son missing, as he fell under the spell of a 47-year-old widowed woman; detectives soon realize she's a sexual psychopath who has claimed the lives of more than one admirer.

Mark Eric and Sherri Ponsati have a picture perfect life, and the arrival of two children completes their family; when Mark Eric reports that Sherri has had a tragic accident, their world falls apart.

In the fall of 1991, rural Michigan is plunged into paranoia and fear when four local teenage girls vanish without a trace; the community is in lockdown as residents face up to the very real possibility that a predator walks among them.

In Toledo, Ohio, Sister Margaret Ann is discovered dead in the chapel on Holy Saturday morning; police mount an investigation that will unearth the lies and secrets leading to her death.

BTK; Border Patrol Serial Killer; Serial Killer in Portland.

When a jilted lover storms into a provincial police station making wild accusations against her ex, one detective questions the credibility and motives of the wronged woman.

When a detective follows up on a series of home invasions as a courtesy to a friend, his investigation brings him face-to-face with a sociopath who is guilty of far more than breaking and entering.

When an off-duty police officer happens upon a minor theft at a San Francisco lumberyard, he unwittingly jump-starts an investigation into the crimes of depraved serial killers Leonard Lake and Charles Ng.

Christa Pike is the only woman on death row in Tennessee; in 1995, she is introduced to Satanism, and her fascination grows until it comes to a deadly head in the woods one night in January.

Wayne High volleyball star Stacy DeGrandchamp is pretty and popular until jealousy and rumors lead to a rift in her circle of friends; when a fight at a party turns deadly, witnesses won't talk, and her killer almost gets away with murder.

A deserted, bloody vehicle makes detectives suspect murder; their investigation plunges them into Florida pageantry's cutthroat world and an unlikely suspect, unraveling a sordid tale of deceit and a shocking fall from grace.

When detectives respond to a 911 call from a lavish Miami apartment, they uncover a bloody scene with a popular social media influencer at the center; as they piece events together, soon it gets clear that a lot is going on behind closed doors.

A missing person's report sends investigators on a desperate search through the seedy underbelly of the Floribama panhandle; all roads lead to a once sought-after porn star, whose fate is revealed when an informant comes forward to unearth the truth.

All-American Midwestern hunk Timothy Boham's innocent modeling career catapults him into porn industry stardom; when Tim tries to escape the vicious cycle of selling his body for money, running from his past proves to be deadly.

After a young couple goes missing, detectives find a clue leading them to a strange storage container in the middle of 95 acres, and what's inside unlocks the secrets of a monster hiding in plain sight.

Gallaudet University is the premier college for the deaf in the United States, but this haven of higher learning is turned upside down after two students are murdered in their dormitory rooms.

A senseless murder rocks an African-American neighborhood in 1970s Detroit; police arrest suspects who are ultimately convicted of murder, but 47 years later, the truth finally emerges to right history's wrongs.

In Florida, friends and family are stunned after an esteemed criminal law professor is executed in his garage; investigators follow a series of leads taking them on a statewide hunt in search of the murderous masterminds.

Investigative reports on crime and justice cases.

Elizabeth investigates the troubling case of Kate Ranta, a military wife who found herself in an abusive relationship and battling all the systems that protect abusers.

Amanda Perrault's dream move to a lake house with her husband and his young daughter turns into a nightmare; a campaign of abuse and terrifying home invasions lead to murder; a sheriff must outwit a calculating killer and bring justice.

Investigative reports on crime and justice cases.

Elizabeth investigates the troubling case of Kate Ranta, a military wife who found herself in an abusive relationship and battling all the systems that protect abusers.

Amanda Perrault's dream move to a lake house with her husband and his young daughter turns into a nightmare; a campaign of abuse and terrifying home invasions lead to murder; a sheriff must outwit a calculating killer and bring justice.

Seventeen-year old Katie lives with her doting parents, who are shocked to find out she's being stalked by an ex-boyfriend they didn't know existed; one night, Katie's parents reluctantly agree to leave her home alone with appalling consequences.

In November 2009, Yei and John Daniels come home to find their house ransacked; a few days later, after enjoying the Christmas of a lifetime, a knock at the door changes their lives forever.

Carol Dennis' decades of hell started when a polygamous Mormon cult leader selected her, at the age of 16, as his next wife.

Las Vegas teen Wendy Mazaros survives sex trafficking and marries her older boss, Tom Hanley - only to discover he is involved with the mob and might be a hit man.

A single father finally finds a love with whom he can grow old; however, just months after they've wed, she depletes his retirement savings, and he learns he's only the latest in a string of victims; when he files for divorce, things get much worse.

Secrets come to light when the torso of Jay Orbin, a self-made millionaire with a loving family and beautiful wife, turns up in the desert.

Janet Chandler dreams of a life beyond the small Midwestern town where she grew up, but those dreams are cut short when she's betrayed in the most horrific way possible.

Suzy Goulart, 23, is just getting by like everybody else in the scrappy Pleasant View apartment complex, where little dramas between friends and lovers add up to Suzy's murder.

High school sweethearts Linda and Derrick Yancey become sheriff's deputies with a picture-perfect marriage, then their marriage degenerates into a tale of good cop/bad cop ending in murder with one of them on the run.

Ed is a retired pilot whose sense of adventure is reawakened by a seaside encounter with the much-younger Denise, then the couple's idyllic life on a boat in a Florida marina is rocked by a sudden change in their fortune.

Tom and Lynette's love story spans decades from grade school to a posh house with a pool, but dark secrets from the bedroom bleed into other aspects of their marriage, and a dangerous obsession shreds their relationship into pieces.

Corinne Stoudt gets a second chance at love with husband Calvin, then a too-close roommate and a monstrous past turns this second chance into a deadly battleground.

When single mother Rosita accepts a stranger's friend request, she has no idea he's hiding a terrifying secret that will lead to a deadly game of cat and mouse.

When Idaho hairstylist Makaela Zabel-Gravatt begins cutting the hair of truck driver Christopher Wirfs, she has no way of knowing it is the start of a two-year nightmare that will end in a heart-stopping and disturbing way.

Sandra never expected such extreme reprisals from her onetime partner, Norman, but when her daughter gets caught in the crosshairs, no one can predict how far Norman will go.

Single mother Latasha Edwards becomes involved with former schoolmate Dammon whose charm hides a possessive and violent nature; after they separate, Dammon's obsession deepens and Latasha must fight to protect her family.

Police reveal a suspected suicide as a brutal nine-shot execution with only two suspects, the victim's ex-wife and their son; that son, Radley Horwitz, recalls the toxic series of events, which he says triggered his mother's murderous act of rage.

In 1998, new homeowners renovating their basement, discover a body; as police investigate, they learn it belongs to teenager Christopher Denoyer, who was reported missing by his family in the 80's.

When a software consultant runs for governor in California, the Bay Area press uncovers his ties to the unsolved murder of 41-year-old millionaire David Coffin; but the candidate points the finger at a woman with whom he and the victim were involved.

A friendly retired couple delights a family with young children when they move in next door. Then the new neighbors' dog attacks the children's mother, setting off a vicious conflict that ends in two shocking murders.

In 1998, new homeowners renovating their basement, discover a body; as police investigate, they learn it belongs to teenager Christopher Denoyer, who was reported missing by his family in the 80's.

When a software consultant runs for governor in California, the Bay Area press uncovers his ties to the unsolved murder of 41-year-old millionaire David Coffin; but the candidate points the finger at a woman with whom he and the victim were involved.

A friendly retired couple delights a family with young children when they move in next door. Then the new neighbors' dog attacks the children's mother, setting off a vicious conflict that ends in two shocking murders.

Police reveal a suspected suicide as a brutal nine-shot execution with only two suspects, the victim's ex-wife and their son; that son, Radley Horwitz, recalls the toxic series of events, which he says triggered his mother's murderous act of rage.

A routine stop for speeding soon turns personal when a deputy comes within inches of death; a knife-wielding man takes a dozen children hostage on a school bus; a suspect leads officers on a long chase that tests their police cars.

In Florida, a carjacking sparks a police chase over land, air, and sea, with the suspect stealing multiple vehicles in a desperate bid to outrun the law.

In Boston, the violence of El Salvadorian gang MS13 is spreading; special agent Jeff Wood is the head of the FBI's North Shore Gang Taskforce and faces a battle of wits and wills to put an end to MS13's violence in his city.

Agent Lewis heads up her first case and uncovers an unchecked world of sex, power and money behind jailhouse walls; a criminal gang takes control of the jail and its staff, and agent Lewis must gather enough evidence to take it down.

The FBI races to track down the polished young woman on a multi-million-dollar jewelry store robbery spree spanning five states; if they can bring her down, agents hope she'll cooperate and reveal the full extent of the gang operating behind her.

Oklahoma newlywed Rex Harper is shot dead at the wheel of his truck on Main Street in what investigators believe is a professional hit; with no witnesses or clues, detectives must crack the cowboy code of silence to reveal the key to his killing.

A prairie-town sheriff uncovers a drug ring that includes its most powerful law enforcement officials; to help bring them down, he calls in the FBI; just before the trial, the ring's kingpin makes a deal, and days later, he's dead.

Single mom Karen Petersen is enjoying a night out when a handsome cowboy charms his way into her home; he attacks her, leaving her for dead, and as more victims emerge, cops fear a serial killer is on the loose.

In May 2017, high school teacher Theresa Lockhart is a no-show at her confirmation sponsor's big event; her car is discovered with nothing inside, prompting police to turn the community upside down.

In March 2014, North Carolina High School freshman Danielle Locklear slips out to see a friend but never returns home; as hours turn to days, her family members as well as the townspeople begin to wonder if a killer could be in their midst.

Alexis Murphy, who is a rising social media star and high school athlete, disappears along the infamous Route 29 in August of 2013; a massive search by local and federal authorities yields zero results, until a security video reveals a chilling clue.

In August 2000, 17-year-old Jessica Carpenter is found murdered in her Aiken, S.C., home by her mother; local reporters and family members tell the story of a town frozen in terror as police search for a possible serial killer on the loose.

After a string of bad dates, Texas social worker Deborah Houchin believes she's finally found the man of her dreams; not long after talk turns to marriage, Deborah disappears; it takes the help of her coworkers to find out what happened.

After college graduate Anita Wooldridge goes missing from her parents' home, investigators must rely on quick thinking and cunning police work, as they race against the clock to find her before it's too late.

Retired NYPD Detective Chris Hanney stands accused of trying to kill his estranged wife, Audrey Mabrey, by setting her on fire.

Debbie Puglisi is enjoying life with her husband in their new dream home, but when an unexpected visitor drops by the neighborhood, Debbie's whole world becomes a nightmare.

A beloved pastor and his wife rent a cabin to get away from it all but a vicious attack leaves one deceased and the other nursing their wounds at the hospital; an investigation into the couple's past reveals a laundry list of suspects and misdeeds.

On New Year's Eve, Tara Gillon's father finds her murdered in her Massachusetts home; one missing shoe -- the right fit could catch a killer.

On a dark and stormy night, police find a family dead in their mansion; a bloody mask lies nearby; a letter to the victim's mother hints at something darker than murder-suicide.

A Vermont anniversary trip turns dark as a romantic getaway unravels into secrets, violence, and a camper crime scene, exposing the fragile line between love and control.

On New Year's Eve, Tara Gillon's father finds her murdered in her Massachusetts home; one missing shoe -- the right fit could catch a killer.

On a dark and stormy night, police find a family dead in their mansion; a bloody mask lies nearby; a letter to the victim's mother hints at something darker than murder-suicide.

A Vermont anniversary trip turns dark as a romantic getaway unravels into secrets, violence, and a camper crime scene, exposing the fragile line between love and control.

A beloved pastor and his wife rent a cabin to get away from it all but a vicious attack leaves one deceased and the other nursing their wounds at the hospital; an investigation into the couple's past reveals a laundry list of suspects and misdeeds.

In Dayton, Ohio, a young mother goes missing after attending a party, and her identical twin becomes convinced there is something deeply sinister afoot.

In North Port, Fla., police receive a call reporting that a young mother has gone missing; in an effort to find her, detectives follow a trail of incoming 911 calls that reveal a heartbreaking story more horrific than they could have ever imagined.

A distraught husband cannot locate his wife; Police discover a videotape, and the grainy footage points to a grisly demise.

When a former crime reporter is found murdered inside his home, investigators eye his spouse and his neighbors, until intercepted jailhouse calls reveal the true killer.

In December 2001, the brutal murder of Robert Fingerhut, the respected owner of two bus stations, spurs an investigation that reveals a sordid relationship of lust, lies and murder; jail calls hold the killer's secrets.

An undercover agent buying drugs and guns from Florida gangs finds himself at the wrong end of the barrel; a young mom and her kids are about to be swept away by a sudden torrent; a truck plows recklessly through rural Ohio.

An ex-con kidnaps a baby at gunpoint in Utah; during a high-speed chase, the suspect calls 911 and threatens to kill the child, firing at officers to prove he is serious; he offers the police a trade: the baby's life for his freedom.

In Ohio, officers respond when a man brandishes a knife in a store; in Georgia, police launch a manhunt after a suspect escapes in his truck, leaving an officer down.

In Oregon, a man vandalizes "The Goonies" house before stealing a yacht, when the yacht capsizes, it becomes a rescue mission; in Texas, a shootout with police leaves one officer critically injured while the suspect flees in his cruiser.

A driver in a stolen vehicle leads a rookie cop on a perilous pursuit through the woods and backyards of Ocala, Florida; in Wauconda, Illinois, a convicted murderer leads a convoy of officers in every direction.

A chance encounter in Utah escalates from death threats in a parking lot to a demolition derby on the interstate; in Illinois, a 100-mile chase ends in a $250,000 drug bust, and in Georgia, deputies call time on one driver's run from the law.

In Camden, Ga., a driver leads deputies on a 150-mph chase before a high-speed PIT brings the pursuit to an end; in rural Texas, a thief leads deputies down dusty roads, through water, and into the woods in the middle of the night.

When a man disappears in Hagerstown, Md., the only clue to his whereabouts is the white BMW he abandons at an apartment complex; investigators turn to CCTV footage to piece together his final movements and unravel a deadly plot.

In Baltimore, a killer strangles two women to death less than a week apart; investigators piece together the clues from CCTV footage from the locations of the two homicides to reveal a suspect with designs on becoming a serial killer.

After Cristina goes missing, detectives look for CCTV that may reveal her movements; when her cell pings at a location in Arkansas, detectives gather surveillance from the area in the hopes it will hold answers to Cristina's disappearance.

In Fernandina Beach, Fla., cosmetologist Joleen Cummings goes missing after an appointment, her last at Tangles Salon; CCTV footage shows her car in an isolated parking lot in the middle of the night; a closer look reveals an unlikely suspect.

Detectives turn to CCTV footage following the shooting of an elderly man taking a nighttime walk in Loveland, Texas; the surveillance images reveal that the driver of an old pickup truck could hold the key to identifying the man's killer.

In 1998, new homeowners renovating their basement, discover a body; as police investigate, they learn it belongs to teenager Christopher Denoyer, who was reported missing by his family in the 80's.

When a software consultant runs for governor in California, the Bay Area press uncovers his ties to the unsolved murder of 41-year-old millionaire David Coffin; but the candidate points the finger at a woman with whom he and the victim were involved.

A series of murders puts the residents of a small town on high alert; as bodies continue to pile up, the urgency escalates, pitting Detective Dave Frankel in a race against time to capture a deranged spree killer before he claims his next victim.

In 1998, new homeowners renovating their basement, discover a body; as police investigate, they learn it belongs to teenager Christopher Denoyer, who was reported missing by his family in the 80's.

When a software consultant runs for governor in California, the Bay Area press uncovers his ties to the unsolved murder of 41-year-old millionaire David Coffin; but the candidate points the finger at a woman with whom he and the victim were involved.

A series of murders puts the residents of a small town on high alert; as bodies continue to pile up, the urgency escalates, pitting Detective Dave Frankel in a race against time to capture a deranged spree killer before he claims his next victim.

Detectives turn to CCTV footage following the shooting of an elderly man taking a nighttime walk in Loveland, Texas; the surveillance images reveal that the driver of an old pickup truck could hold the key to identifying the man's killer.

In Richmond, Va., a love triangle tears apart a group of gay girlfriends and leads to murder; investigating this senseless and sadistic killing, detectives uncover a plot fueled by lies, gossip and a thirst for revenge.

In Johnstown, N.Y., a young man's disrespectful behavior has his friends seeing red; the group plots to teach him a lesson, but things go horribly wrong, kicking off a murder mystery more intricate than a jigsaw puzzle.

Single mother Christina Sanoubane leaves her abusive boyfriend to move into her own apartment, then, four days later, Sanoubane's toddler tells a visitor to the apartment that his mother is dead.

Thirty-nine-year-old Melissa Lewis becomes a partner at a prestigious law firm, then she is found murdered, and police must scour her most intimate professional and private relationships to find her killer.

Forty-two-year-old single father of four Richard Mannion is found shot to death in his home, and police suspect he may have been looking for love in all the wrong places.

After Christmas shopping, 18-year-old Linda Velzy vanishes into upstate New York's frozen landscape; the primary suspect refuses to talk to detectives, so Linda's father hatches a plan, but temperatures are dropping, and time is running out.

Seventy-four-year-old widow Virginia Johannessen is shot dead in her home; then, another widow is murdered on the same street; as police unravel the truth, they discover they've made a chilling mistake.

A family of four is murdered in their home on a cold January night; as fear grips the small town of Evansville, Ind., detectives launch a desperate manhunt for a deranged killer.

Terror strikes during a young family's evening stroll in La Mirada, Calif.; nothing seems to add up during the criminal investigation, with the truth taking years to emerge.

In Susanville, Calif., a beloved police officer is found dead in what looks like an apparent suicide, then detectives launch a full-blown murder investigation and zero in on the officer's wife as a possible suspect.

George Kalomeris is a family man who looks after the less fortunate in his community, then a dying man fingers Kalomeris as the shooter, and police discover a monster more diabolical than anyone could ever imagine possible.

A cold morning in December starts off like any other, then a farmer finds the body of a dead woman; what seems like a rape and murder case turns into a conspiracy, and someone's diabolical nature is soon revealed.

In Hudson, Wis., Charlene and Darrell Wold seem to be living a blissful existence with their blended family; they do all they can to keep their household safe and secure, but they never imagined the real danger would come from within.

After years of searching for love, Doris thinks she's finally hit the jackpot with an old friend named Mark; something dark starts taking hold of their marriage.

Gil Dossett and his family live an idyllic existence until an accident changes everything; though it takes years to chart a new course through life, Gil seems to finally land on his feet until he finds himself in a dark place.

Tabatha Spake grows up in an adoring home, but by the time she's a teenager, she longs for a different kind of love; just when she finally finds happiness, a monster turns her dreams into a nightmare.

As Lynn Steller and her nephew Ronald lie motionless in their kitchen, Lynn's girlfriend arrives home; at first, the woman thinks this is an elaborate Halloween prank, but when she looks again, she discovers a scene that will haunt her forever.

On New Year's Eve, Tara Gillon's father finds her murdered in her Massachusetts home; one missing shoe -- the right fit could catch a killer.

On a dark and stormy night, police find a family dead in their mansion; a bloody mask lies nearby; a letter to the victim's mother hints at something darker than murder-suicide.

A selfless woman who often welcomes needy people into her Lancaster, Texas, home pays a bloody price when a man with a hatchet brutalizes her, her invalid mother, and a houseguest who was in the wrong place at the wrong time.

On New Year's Eve, Tara Gillon's father finds her murdered in her Massachusetts home; one missing shoe -- the right fit could catch a killer.

On a dark and stormy night, police find a family dead in their mansion; a bloody mask lies nearby; a letter to the victim's mother hints at something darker than murder-suicide.

A selfless woman who often welcomes needy people into her Lancaster, Texas, home pays a bloody price when a man with a hatchet brutalizes her, her invalid mother, and a houseguest who was in the wrong place at the wrong time.

As Lynn Steller and her nephew Ronald lie motionless in their kitchen, Lynn's girlfriend arrives home; at first, the woman thinks this is an elaborate Halloween prank, but when she looks again, she discovers a scene that will haunt her forever.

Young actress Rebecca Schaeffer is gunned down in her doorway in Hollywood, Calif.; detectives investigate, wondering if there's a copycat killer in their midst.

When 13-year-old Sarah Rairdon vanishes from an isolated road in tiny Underwood, Minn., the entire town launches an exhaustive search; the discovery of her body leads to terrifying fears of child abductions and reveals a tragic secret.

Kidnapped at gunpoint, Schanda Handley knew exactly who was behind it -- her ex-husband, Michael Handley; a tumultuous relationship riddled with threats and assaults turned even more hostile the day Schanda was convinced she would die.

A night out for two friends in Los Angeles ends in tragedy after masked men drop them off at separate hospitals; the young women die from drug overdoses, and police immediately suspect foul play; Jonathan Vigliotti investigates.

Intruders shoot wealthy jeweler Ted Shaughnessy at his home in Austin, Texas; investigators wonder if it was a random attack or a robbery gone wrong; as they dig deeper, police suspect it wasn't a stranger killing at all.

The mysterious disappearance of a New York millionaire and an audacious plan to steal an $8 million townhouse unearth a scarcely believable story; how glamorous mother and son, Sante and Kenny Kimes, con, cheat and kill their way across America.

A mom, Kay Parsons, is brutally murdered in a Georgia suburb; her neighbor and best friend, Becky Sears, is shot the next day; police uncover a tale of adulterous deceit, which links the attacks and reveals a deadly mother-son conspiracy.

A gospel radio host and her son get into a minor street parking dispute with their next-door neighbor; yet the neighbor's anger is anything but minor, and soon, the whole community bears witness to his unleashed wrath.

The story of two families whose initially warm welcome curdles into something far more sinister.

A peaceful suburb turns upside down when a family learns that the neighbor has kept a secret wife locked in his home for years; things escalate when the family helps her escape with her baby, leading to a bitter feud that ends in terrible bloodshed.

A bachelor is welcomed into a neighborhood, but things go south when he starts disputing the property lines; the warring parties film each other extensively but the cameras aren't running when violence erupts.

The only thing scarier than a serial killer is one hiding in plain sight.

The only thing scarier than a serial killer is one hiding in plain sight.

A killer torments young women and his own family in the Pacific Northwest.

A killer torments young women and his own family in the Pacific Northwest.

Living with her mother, sister and grandmother, Catherine dumps her drug-using boyfriend, Shane, who breaks into her home and takes everyone hostage; Catherine hides behind a shower curtain for five hours not knowing how the deadlock will end.

When a single mother breaks up with her volatile boyfriend, she finds out he has other plans for her; armed with a gun, he holds her hostage; as her life hangs in the balance, she has no idea her friend on the SWAT team is determined to save her.

After a family man is found discarded alongside a rural road, police learn the brutal murder took place in his home while his children slept; chilling suspicions and rumors about the family become reality as a deadly betrayal is revealed.

Sophia Putney-Wilcox is excited to start her senior year of high school after ending an abusive relationship with her boyfriend, Adam; unable to take the rejection, Adam breaks into her house with a bottle of gasoline and a lighter.

When a single mother breaks up with her volatile boyfriend, she finds out he has other plans for her; armed with a gun, he holds her hostage; as her life hangs in the balance, she has no idea her friend on the SWAT team is determined to save her.

After a family man is found discarded alongside a rural road, police learn the brutal murder took place in his home while his children slept; chilling suspicions and rumors about the family become reality as a deadly betrayal is revealed.

When a single mother breaks up with her volatile boyfriend, she finds out he has other plans for her; armed with a gun, he holds her hostage; as her life hangs in the balance, she has no idea her friend on the SWAT team is determined to save her.

Living with her mother, sister and grandmother, Catherine dumps her drug-using boyfriend, Shane, who breaks into her home and takes everyone hostage; Catherine hides behind a shower curtain for five hours not knowing how the deadlock will end.

A young husband is shot dead in his Morris, Ala., home, and police initially believe it's a robbery gone awry; when the town rumor mill swirls to life, authorities uncover a dark secret hiding between the pews of the local Baptist church.

Three teens vanish, and a Texas town's worst fears are realized when they're found dead; details of a related robbery identify a suspect, but after a rattling jailbreak, the city must mobilize the largest manhunt in state history to nab the culprit.

After Allison Walker mysteriously goes missing just days before Christmas, investigators scour her pig farm in Adairville, Ky., in search of clues.

A picture-perfect dinner for two dissolves into a nightmare for college sophomore Dominique Nicky Hurd and a fellow classmate after they become the targets of a deranged predator.

In an Oklahoma town, Amanda Burney and her fiancé, Ethan Walton, run an errand that turns into a run for their lives.

When 31-year-old Ashley Young doesn't call her mom for days, her family and friends fear for the worst; when a 911 call triggers a basement discovery, those fears come true.

In rural Pennsylvania, a young family discovers a mysterious skeleton buried in their basement; archeologists come in to identify the body, uncovering the truth about a decades-old missing person's case and a family secret.

In 1998, new homeowners renovating their basement, discover a body; as police investigate, they learn it belongs to teenager Christopher Denoyer, who was reported missing by his family in the 80's.

A town in Michigan becomes scandalized when a partially nude corpse turns up; police sift through lies and alibis as they search for the killer.

The town of Higginson only has two full-time police officers, and one is gunned down while on duty.

A roommate reports 22-year-old Liz Syperda missing, shocking the community of Mount Pleasant, Iowa; some wonder if Liz merely left town without telling anyone, but family and friends know something far more disastrous occurred.

After James Skinner turns up dead in his own bedroom, the agricultural community of Brownstown, Ill., enters into a paranoid spiral, unsure who would want to kill this beloved local rodeo rider and cattle rancher.

When Debra Davis' husband excoriates her for refusing to experiment sexually, she thought there was something wrong with her, never suspecting her husband's perversions are signs of something evil deep inside him.

When Elizabeth Flores was a child, her sister, Louise, tried to shield her from a horrible family secret; when Louise met David Turpin, that all changed.

Timothy Bass had gotten away with murder for decades, telling his wife, Gina, that he enjoyed working the night shift to make extra money; Gina believed him until she uncovered his secret and was left wondering what evil her husband had done.

After finding her name on a bullet, a woman fears her son has lethal plans.

The lives of a beautiful young family in Long Beach, New York, rip apart when five-year-old Audrey witnesses her mother, Diane, brutally stabbed to death; to Audrey's horror, her mother's murderer is somebody very close to home.

Delve into the psyche of America's notorious serial killers.

A graduate student calls 911 to say she just shot her boyfriend, a 29-year-old attorney, in self-defense; police soon discover that her story doesn't add up and realize they are face-to-face with a psychopath.

Delve into the psyche of America's notorious serial killers.

A graduate student calls 911 to say she just shot her boyfriend, a 29-year-old attorney, in self-defense; police soon discover that her story doesn't add up and realize they are face-to-face with a psychopath.

The lives of a beautiful young family in Long Beach, New York, rip apart when five-year-old Audrey witnesses her mother, Diane, brutally stabbed to death; to Audrey's horror, her mother's murderer is somebody very close to home.

Shortly after 30-year old Katrina Smith vanishes, investigators discover her abandoned car as well as security footage of a stranger walking alone the night she went missing; soon, secrets will be unearthed and suspects will emerge.