为了获得普利策奖，一名记者谎称自己患有精神疾病，而进入了疯人院，以此来调查一个谋杀犯。但当他逐渐接近那名凶手时，疯狂也亦步亦趋地慢慢侵袭到他的头脑...... 　　这部描写疯人院中离奇案件的影片充斥着塞缪尔.富勒锐利的愤怒色彩，令人不寒而栗Johnny Barrett, an ambitious journalist, is determined to win a Pulitzer Prize by solving a murder committed in a lunatic asylum and witnessed only by three inmates, from whom the police have been unable to extract the information. With the connivance of a psychiatrist, and the reluctant help of his girlfriend, he succeeds in having himself declared insane and sent to the asylum. There he slowly tracks down and interviews the witnesses - but things are stranger than they seem ...