In a Madman's World (2017) is a Crime, Drama, Horror, Thriller film that follows directly based upon the infamous Houston Mass Murders, the film centers around Elmer Wayne Henley's life before, during, and immediately after his involvement with Dean Corll and David Brooks, and their killing spree of over 28 victims from 1970 to 1973. In a Madman's World is not currently listed with streaming providers in your selected region, but availability can change over time. Fans of crime movies may also want to explore similar titles below.