Dr. Rex Martin (Bill Pullman) is a "brain man," a doctor whose research specialty is isolating the physical causes of mental illness. Jim Reston (Bill Paxton) is a sleek corporate Mephistopheles whose shallow, opportunistic career plan depends on the mathematical genius of one Dr. Jack
Halsey (Bud Cort). The problem: Halsey has gone mad, murdered his wife and children, and been locked away in a facility for the criminally insane. Halsey is gripped by a dazzling array of paranoid hallucinations, the most persistent of which is that he is being followed by a man in a bloodstained
white suit, the man who really murdered his family. Reston and his employers, the execut...