When a young woman's car is found abandoned on a bridge, police must consider three possibilities, including suicide, foul play and an intentional disappearance.

When a hero firefighter is found savagely murdered in his own home, the trail of evidence leads police on a twisting and tension-filled journey to justice.

Police investigate a residential house fire and discover it was intentionally set to cover up a savage murder; they hunt for evidence that may have survived the fire.

A 16-year-old girl disappears on her way to visit friends; as police retrace her last known movements, they uncover evidence she may have been kidnapped by an international human trafficking ring.

A teenager vanishes during a bike ride through Point Defiance Park in Tacoma. Wash.; the investigation into her disappearance leads police to fear that a serial killer is on the loose in Tacoma.

Police find a young woman who has been run over by her own car, marking the beginning of a terrifying murder mystery.

Fourteen-year-old Barbara Rowan disappears after leaving home with a baseball mitt on a warm summer afternoon; a neighbor tells investigators that the missing teenager left to meet her "coach," even though she doesn't play organized sports.

While searching for a missing mother, police discover evidence that puts them on the trail of a deadly sexual predator.

A beloved grandmother is savagely murdered during a life-and-death struggle; a family secret may be the key to bringing her heartless killer to justice.

A young girl is abducted while playing outside her grandmother's house.

A young mother is strangled to death during her overnight shift at an office building.

When a young woman disappears on a cold night in Breckenridge Colo., one of the state's darkest mysteries begins.

A college student disappears in broad daylight after an afternoon of sunbathing at a busy lake; the mystery deepens when her wallet is found along with personal items belonging to another victim of a violent crime.

Two girls take a trip to the mall and never come home; less than 24 hours later they are found shot to death in a desolate field; investigators ask whether they were killed by someone they knew or a notorious serial killer.

A young mother inexplicably disappears in the middle of the night only to be found savagely murdered the next morning, prompting police to retrace the tumultuous events of her last night on Earth.

When a young woman is savagely murdered in her own home, police must study the bloody crime scene to find the clue that will lead them to her killer.

A woman and her teenage daughter are savagely murdered in their own home; police find clues at the crime scene, including a bloody bare footprint and an unharmed 3-year-old girl with a heartbreaking story.

A teenage couple out on a date are ambushed by a gun-wielding madman; the lone survivor's heartbreaking account may hold the key to bringing a cold-blooded killer to justice.

After years of frustration and heartbreak, investigators from three states work together to find the deadly predator responsible for three murders that are connected by one common thread.

An elected community official is found stabbed to death in his Washington, D.C., home.

A young girl is kidnapped from her bed in the middle of the night; later, she is found dead in a nearby canal, marking the beginning of one of Salt Lake City's most notorious child murder investigations.

Lt. Joe Kenda spent 23 years in the Colorado Springs Police Department, where he amassed a lifetime of memories catching killers and helping solve close to 400 homicide investigations. The vivid memories are brought back to life in this hourlong series, as Kenda reopens his "Murder Books" for viewers -- folders in which every detail of his murder cases is held -- to revisit the most disturbing cases still haunting him today. As he details the process of how he solved the crimes, Kendra also embarks on a personal journey, coming to terms with long-suppressed nightmares. As he says, "I don't want to tell these stories. I need to."

Each episode of this true-crime reality series examines a different felon, usually a female, who has committed murder or attempted murder. The victim is usually the perpetrator's partner. The documentary-style series features interviews with friends and family members of the accused and victims, law-enforcement officials, attorneys and other people with first-hand knowledge of the cases.

How well do you know your neighbors? What are their names? What do they do for a living? After watching "Nightmare Next Door," you may want to find out a little more about them. Each episode tells the story of a murder that happened in a seemingly tight-knit community. Viewers get to the heart of the case through interviews with investigators, prosecutors, family members and -- of course -- neighbors, in addition to forensic experiments. The stories reveal twists and turns, and when a suspect emerges, the final outcome can surprise everyone involved.

From blushing brides turned cold-blooded killers to smitten grooms with shocking dark sides, "Fatal Vows" examines the criminal psychology behind deadly divorces. Guiding viewers through actual stories of love gone wrong are psychotherapist Stacy Kaiser and forensic/clinical psychologist Dr. Brian Russell, who examine each couple to better understand how the marriage turned from flawed to fatal. Stylized re-enactments are supported by interviews with family, friends, law enforcement, and potential victims of the crime, while Kaiser and Dr. Russell provide analysis on unions that break down until divorce and murder collide.

Here today, gone tomorrow. Thousands of people go missing in the United States each year, leaving behind only a mystery without any clues. Their stories are told in "Disappeared" through the voices of family, friends and investigators trying to solve the case, with each hourlong episode recounting the final stages that led to a person's disappearance. Interviews with experts including psychologists and forensic specialists provide new insights into what may have happened -- whether foul play was involved or the subject simply ran away.

From the outside, families seem like harmonious units in loving homes. But you don't necessarily know what secrets families are hiding from the outside world. This series, narrated by actress Brenda Strong, explores families hiding the most extreme of family secrets: murder. Each episode explores a death in a family, unraveling the motives of the family members, all of whom are potential suspects -- and potential victims. Sibling rivalries, disputes over family businesses and infidelity are some of the factors that lead to the families' ultimate betrayals.