The Backstory: Before Idaho: A Mass Murderer Slaughters 8 Students in Their Dorm - Elvis Duran and the Morning Show ON DEMAND

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.

See omnystudio.com/listener for privacy information.