Trailer for new Errol Morris doc 'My Psychedelic Love Story'

Errol Morris profiles Timothy Leary companion Joanna Harcourt-Smith in My Psychedelic Love Story. The film focuses on the government's successful attempts to break Leary and get him to become an informant in the movement he helped start:

Why did Timothy Leary, the High Priest of LSD, become a narc in 1974abandoning the millions he urged to turn on, tune in, and drop out?