In 1953, CIA biochemist Frank Olson was secretly dosed with LSD by MKUltra chief Sidney Gottlieb at a retreat. Nine days later, he fell to his death from a 13th-floor hotel window in New York City, ruled a suicide. When his body was exhumed in 1994, forensic scientist James Starrs found cranial injuries consistent with a blow to the head before the fall, and the manner of death was changed to 'unknown.' The CIA paid the family $750,000 in 1975.