It's been over 50 years, but Wayne Ritchie says he can still remember how it felt to be dosed with acid. Ritchie may be among the last of the living victims of MK-ULTRA, a Central Intelligence Agency operation that covertly tested lysergic acid diethylamide (LSD) on unwitting Americans in San Francisco and New York City from 1953 to 1964. Seymour Hersh first exposed MK-ULTRA in a New York Times article in 1974 that documented CIA illegalities, including the use of its own citizens as guinea pigs. There were at least three CIA safe houses in the Bay Area where experiments went on. Chief among them was 225 Chestnut. Inside, prostitutes paid by the government to lure clients to the apartment served up acid-laced cocktails to unsuspecting johns, while martini-swilling secret agents observed their every move from behind a two-way mirror. The main man behind the mirror was ... George H. White, a Bureau of Narcotics maverick. He oversaw the San Francisco program, gleefully dubbing it Operation Midnight Climax. But, as a 1976 Senate Select Committee on Intelligence Activities noted, there was no medical pre-screening. White [wrote] in a 1971 letter to [Sidney] Gottlieb, Of course I was a very minor missionary, actually a heretic, but I toiled wholeheartedly in the vineyards because it was fun, fun, fun. Where else could a red-blooded American boy lie, kill and cheat, steal, deceive, rape and pillage with the sanction and blessing of the All-Highest?"