Crime Library: Criminal Minds and Methods

The crimes of John Paul Knowles, the Casanova Killer

On November 7, 1974, police found the bodies of Carswell Carr and his daughter Mandy. He had been tortured to death, while she had been strangled, then her corpse sexually assaulted. The investigation ultimately led police to Knowles, a handsome and charming drifter, believed to have killed between 18 and 20 people.

Mark Essex, the Howard Johnson Sniper

Mark Essex, a member of the Black Panthers, gunned down 19 people, including 10 police officers, in New Orleans on New Year’s Eve, 1972. He was one of the inspirations for Washington D.C. sniper John Allen Muhammed 30 years later. The New Orleans police, assisted by firemen and Marines stopped the massacre in a daring helicopter shootout on the roof of the Howard Johnson hotel.

Andrew Cunanan: After Me, Disaster

On April 26, 1997, Andrew Cunanan flew to Minneapolis "to finish some business." The next day his notorious killing spree, which would claim the lives of five people including famous designer Gianni Versace, began.

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