In November 1956, three people gathered in a converted Connecticut barn to take LSD, a powerful psychedelic drug that was legal at the time. The children had just been put to bed upstairs. In the converted barn's main room, Elizabethan ballads drifted through smoke-thick air as someone scattered chrysanthemum petals across a sheepskin rug. The flowers seemed to reanimate in the candlelight, blooming and dying with each flicker.