Based on the novel by Michael Crichton, this chilling sci-fi tale stars George Segal as a brilliant computer scientist who suffers violent seizures as the result of a head injury. In an attempt to control the spells, he has a microcomputer implanted into his brain─one that unexpectedly causes him to become a killing machine. With Joan Hackett, Richard Dysart, Donald Moffat. 107 min. Widescreen (Enhanced); Soundtrack: English Dolby Digital mono.