How can an evangelist convert a hard-boiled sophisticate? Why does a POW sign a “confession” that he knows is false? How is a criminal pressured into admitting his guilt? Do the evangelist, the POW’s captor, and the policeman use similar methods to gain their ends? These and other compelling questions are discussed in the definitive work by William Sargant, who for many years until his death in 1988 was a leading physician in psychological medicine. Sargant spells out and illustrates the basic techniques used by evangelists, psychiatrists, and brain-washers to disperse the patterns of belief and behavior already established in the minds of their hearers, and to substitute new patterns for them.