By Reason of Insanity (film)

By Reason of Insanity is a 1982 American made-for-television psychological thriller film directed by Peter Levin and starring Nastassja Kinski, Jürgen Prochnow, and Danny Aiello.

The film tells the story of Elizabeth Bennish (Kinski), a young woman who suffers from mental illness, specifically schizophrenia. She is institutionalized after being found not guilty by reason of insanity for the murder of her abusive father. While in the institution, she is treated by Dr. Ernest Allan (Prochnow), a psychiatrist who attempts to help her confront her past and understand her condition. The film explores the complexities of mental illness, the challenges of treatment, and the ethical dilemmas faced by mental health professionals. It delves into the question of whether Elizabeth is truly cured, or if she remains a potential danger to herself and others. Aiello plays Lieutenant Anthony Maggio, a police detective skeptical of Elizabeth's recovery and who investigates further, believing she manipulated the system.

The film received mixed reviews upon its release, with some critics praising Kinski's performance and the film's exploration of mental illness, while others criticized its melodramatic tone and predictable plot elements. Despite the mixed reception, By Reason of Insanity is notable for addressing the sensitive subject of mental illness in a prime-time television format.