This psychological thriller from Brian DePalma stars John Lithgow in a tour-de-force performance as a psychologist who is coerced into joining his disturbed father (Lithgow again) in conducting sadistic experiments on children. When son helps Dad, he takes on the personality of a deranged tough guy (also played by Lithgow). Lolita Davidovich and Steven Bauer co-star. 95 min. Widescreen (Enhanced); Soundtracks: English Dolby Digital Surround, Spanish Dolby Digital Surround, French Dolby Digital Surround; Subtitles: Spanish; theatrical trailer; biographies.