Charles Manson. Jeffrey Dahmer. John Wayne Gacy. Richard Ramirez. Serial killers; arguably the most terrifying criminals in the world. Jason Moss -- a brilliant 18-year-old student -- contacted these killers and mimicked the profiles of their ideal "victims" and disciples in an effort to get them to open up. It worked. Through taped conversations and reams of correspondence (including drawings and birthday cards), the convicts gave him an unprecedented guided tour of their depraved worlds, culminating with Moss' bizarre prison visit to an unguarded John Wayne Gacy -- who staked out Moss as his last victim.