From the pathological killer who gunned down the innocents at Virginia Tech to the average citizen who suspects the government is monitoring phone calls, the signs of suspiciousness and paranoia are all around us. In this comprehensive overview of an increasingly serious problem, an experienced psychologist and researcher describes what paranoia is, how and why it manifests itself, and the many forms it takes, including stalking, pathological jealousy, as a reaction to post-traumatic stres...