The story behind Truman Capote's classic In Cold Blood when the four members of the Clutter family are brutally murdered, detectives mount a nationwide search for the killers and face the chilling prospect that they died for no reason whatsoever.

Los Angeles, CA, 1968: It's a temperate evening in the L.A. Castilian apartment complex, but something is amiss inside the adjacent parking garage.

Santa Cruz, CA, 1970: Police respond to a blazing house fire and are shocked at their discovery – three adults and two children are found ritualistically bound, shot, and drowned in their own swimming pool.

1934: Eric Madison is found dead in a boarding house at the back of the Warner Brother's lot. But in an age where propriety is paramount, will the punishment fit the crime?

1954: When Marilyn Sheppard is found beaten to death in her bedroom, it will take more than thirty years to piece together the truth of what happened the night she died.

1960: When wealthy Mary Burge is found strangled in her bed, detectives encounter a world of hooded Klan members and blue blood Yankees where the truth is stranger than fiction.

Easter Sunday turns deadly when a pin-up model and two others are discovered brutally murdered. Religion, art, and madness come together in this twisted tale of love and obsession.

1966: It starts with a simple knock on a bedroom door, and begins one of the most infamous mass murders in American history. A strange man enters the home of nursing students and systematically tortures, rapes, and murders eight young women, then disappears into the night. The investigation follows a series of wild twists and turns as police coordinate a citywide dragnet to capture one of the most violent criminals in history before he strikes again.

1968: When a local reporter receives a mysterious phone call from a murderer who threatens to kill again, Gaffney police must race against the clock to try to save the town's teen girls.

Kansas City, MO, 1953: Bobby Greenlease has been kidnapped. When the largest ransom payout in history fails to bring Bobby back, St. Louis' shadiest characters must track down the culprits.

Money and influence allow the Greenlease's to keep the FBI out of the case, but when the largest ransom payout in history fails to bring Bobby's safe return, it will fall to the hands of St. Louis' shadiest characters to track down the culprit.

Gretchen is a wild child - beautiful, blonde, and impulsive - but Wendy is a goodie-two-shoes. In a town known for its delinquents and runaways, the Fritzes must accept that their daughters may have hit the road without saying goodbye.

Tucson, AZ, 1965: When Gretchen Fritz and her sister Wendy leave for a movie and never come home, police must infiltrate the tight-knit world of Speedway teens to discover the disturbing truth behind the girls’ disappearance.

Austin, TX, 1966: A rain of bullets descends on students and faculty at the University of Texas. But when the smoke clears there remain more questions than answers: who could have done this evil, hideous thing? And why?

San Bernardino, CA, 1964: When Lucille and Cork Miller's car crashes, Cork burns to death inside. Half the evidence suggests it was an accident, but could Lucille have wanted her husband out of the picture?

San Bernardino, CA, 1964: When Lucille and Cork Miller’s car crashes, Cork burns to death inside. Half the evidence suggests it was an accident, but could Lucille have wanted her husband out of the picture?

Learn more about the Chillingworth's and the time period in which they lived in.

United Airlines Flight 629 explodes in mid-air, killing everyone aboard. Crash investigators wonder if it was an accident at all.

When Kitty Genovese is stabbed to death outside her Queens apartment building, her case is treated like any other murder. But when police search the area, they’re surprised to find that many people heard or saw something. Yet the stories don’t match.

Easter Sunday turns deadly when a pin-up model and two others are discovered brutally murdered. Religion, art, and madness come together in this twisted tale of love and obsession.

New York City, 1963. Two young women are brutally murdered in their Upper East Side apartment. If these girls aren't safe, who is?

Learn more about United Airlines flight 629 and the time period in which the tragedy took place.

Austin, TX, 1966: A rain of bullets descends on students and faculty at the University of Texas. But when the smoke clears there remain more questions than answers: who could have done this evil, hideous thing? And why?

1954: When Marilyn Sheppard is found beaten to death in her bedroom, it will take more than thirty years to piece together the truth of what happened the night she died.

Austin, TX, 1966: Murderer Charles Whitman appears to be on the loose, and the police are racing to find him before he kills again.

Learn more about the time period in which the Co-Ed Killer's victims lived in.

1960: When wealthy Mary Burge is found strangled in her bed, detectives encounter a world of hooded Klan members and blue blood Yankees where the truth is stranger than fiction.

San Bernardino, CA, 1964: When Lucille and Cork Miller's car crashes, Cork burns to death inside. Half the evidence suggests it was an accident, but could Lucille have wanted her husband out of the picture?

San Bernardino, CA, 1964: When Lucille and Cork Miller’s car crashes, Cork burns to death inside. Half the evidence suggests it was an accident, but could Lucille have wanted her husband out of the picture?

Learn more about the Woodward's and the time period in which they lived in.

Gretchen is a wild child - beautiful, blonde, and impulsive - but Wendy is a goodie-two-shoes. In a town known for its delinquents and runaways, the Fritzes must accept that their daughters may have hit the road without saying goodbye.

Tucson, AZ, 1965: When Gretchen Fritz and her sister Wendy leave for a movie and never come home, police must infiltrate the tight-knit world of Speedway teens to discover the disturbing truth behind the girls’ disappearance.