In the summer of 1961 a group of men and woman volunteered for a memory experiment. None could have imagined that, once seated in the lab, they would be placed in front of a box known as a shock machine and asked to give electric shocks to a man they had just met.For Gina Perry, the story of the experiments never felt finished. Listening to participants' accounts and reading Milgram's unpublished files and notebooks, she pieced together an intriguing, sensational story: Milgram's plans went further than anyone had imagined. This is the compelling tale of one man's ambition and of the experiment that defined a generation.