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?

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?

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.

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.

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.

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.

Jeanne Harrington’s marriage to Michael Gabel was on the rocks. The couple were constantly fighting and instead of talking it out Jeanne took things into her own hands… in more vicious ways.

Want to know whatever happened to Jane Andrews, this Deadly Woman? Pat Lalama fills you in on the details.

Lizzie Borden, American most infamous murderess. Born into a wealthy respected family, Lizzie was a quiet, Sunday school teacher - that is until she took an ax and hacked her stepmother and and father to death. Or did she?

Brittany Norwood has a history of stealing, she murders her work colleague after being caught stealing from the store.

Who's the deadliest woman of them all? Vote for your choice among the "Deadly Women" on InvestigationDiscovery.com and your selection could be featured in July's special countdown episode.

Some women can’t resist boy toys. But fur flies when these women reveal they're "Killer Cougars.” 39-year-old Dr. Shirley Turner exposes some skeletons in her closet: a history of affairs with younger men all ending in rejection that Shirley could not handle.

Are they lovely or lethal? Catch an all new season of Deadly Women, Thursdays on Investigation Discovery.

Want to know whatever happened to Jennifer Reali, this Deadly Woman? Pat Lalama fills you in on the details.

Beauty queen Darlene Doskocil always wanted the easy way out.