The Idaho killer was sentenced this week to life in prison for stabbing to death 4 college students. But 60 years ago, another mass murderer stabbed and strangled 8 nursing students in Chicago. As in the Idaho case, he made one crucial mistake that got him caught.

The Backstory: The Tylenol Murders
08:45

The Backstory: Corn Flakes, Rice Krispies and a Billion Dollar Feud
08:53

The Backstory: Victorian Death Parties
06:48