When a mysterious illness strikes down Frank Hilley - the father of a prosperous family living in Anniston, Alabama - his widow Marie is forced to raise their two children alone. But then - the family starts receiving strange threats.

Whenever he's home on leave, devoted father and military helicopter pilot Bob Yates loves videotaping his wife Linda and their four children. But when they move to Spokane, WA - those videos take a sinister turn.

In rural Ohio, an intruder brutally guns down Jack and Linda Myers in their sleep. The only witness is their sleepy four-year-old grandson. Now, members of the Myers family are speaking out about the horror of what happened that night.

Secret double lives of the killers among us exposed.

Secret double lives of the killers among us exposed.

1996. A father in Texas seeks revenge for the savage dismemberment of his son. A girl in Mississippi desperately tries to escape the metal footlocker she has been imprisoned in... and a rookie detective is assigned a case that will define his career.

An 11-year-old makes a gruesome discovery in her own home while a woman is desperate to reach her mother has a haunting feeling something horrible has happened and one homicide detective is assigned a murder case that will rattle her to the core.

In 1989, in peaceful Dryden, New York, a Christmastime massacre claims an entire family. Just when it seems the horror has passed, terror visits Dryden again. With these events, a so-called "curse" will descend on Dryden for ten years.

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.

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.

Key Biscayne, FL, 1964: Candy Mossler finds her multi-millionaire husband, Jacques, stabbed to death in their apartment. Detectives are swept into a twisted tale of incest, secret homosexual liaisons, and money, money, money...

Key Biscayne, FL, 1964: 40-year-old Candy Mossler finds her multi-millionaire husband, 69-year-old Jacques stabbed to death in their apartment. Detectives are swept into a twisted tale of incest, secret homosexual liaisons, and money, money, money...

Learn more about Alice Crimmins and the time period in which she lived.

In 1965 Alice Crimmins' children suddenly go missing in the night and turn up dead, leaving her New York neighborhood wondering who did it. Series premieres Tuesday November 12 at 10/9C. Only on Investigation Discovery!

Live Oak, FL, 1952: The revered Dr. Leroy Adams has been shot in his office. In a time of segregation and secrets, figuring out who is responsible may not be as easy as simply identifying the killer.

Learn more about the "Career Girls" and the time period in which they lived in.

In 1967 a series of young female co-eds from Michigan universities are murdered one by one in horrible ways.

Live Oak, FL, 1952: The revered Dr. Leroy Adams has been shot in his office. In a time of segregation and secrets, figuring out who is responsible may not be as easy as simply identifying the killer.

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.

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