not guilty by insanity

Monsters Inside is a Netflix docuseries about Billy Milligan, the Ohio man acquitted by reason of insanity after multiple rapes in 1977, claiming 24 separate personalities.

Apple TV+ 3-part docuseries about the December 8, 1980 murder of John Lennon outside the Dakota in Manhattan, and the investigation and conviction of Mark David Chapman.

The Slender Man Stabbing is a 2014 attempted murder case in which two 12-year-old girls stabbed their classmate 19 times in Waukesha, Wisconsin, to become proxies of a fictional internet character.

The Billy Milligan case is a 1977 Ohio criminal case in which William Stanley Milligan was charged with kidnapping, robbing and raping three OSU students and acquitted by reason of insanity.

Published in 2010 and co-written with journalist Rikke Pedersen, this autobiographical account gives Peter Lundin's own version of the life and crimes that made him one of Denmark's most infamous criminals. It traces his path to the 2000 triple murder of Marianne Pedersen and her two sons.

On 1 October 2020, a 51-year-old man drove his Range Rover through the pedestrian zone of Trier, Germany's oldest city, killing six people and injuring 14 others. The attacker, identified as Bernd W., was arrested without resistance at the scene. The case raised urgent questions about mental illness, alcohol abuse, and the prevention of mass violence in public spaces.

On March 30, 1981, outside the Washington Hilton Hotel, a 25-year-old man fired six shots at President Ronald Reagan. The assassination attempt wounded the president and three others, and set in motion events that would reshape U.S. law and national security policy.

In 1977, Roch Thériault established the Ant Hill Kids, a commune in Quebec that became synonymous with systematic torture, child abuse, and murder. By the time authorities dismantled the cult in 1981, Thériault had fathered over 20 children with members and subjected dozens—including 26 children—to horrific abuse under the guise of religious purification.