An implant designed to control violent impulses goes awry in this adaptation of Michael Crichton's novel. George Segal, Joan Hackett, Richard A. Dysart, Jill Clayburgh. Dr. McPherson: Donald Moffat. Dr. Morris: Michael C. Gwynne. Gerhard: Matt Clark. Priest: Ian Wolfe. Detective: Normann Burton. Mike Hodges directed.