Not just a documentary about madness, this illuminating film by John Cadigan and his older sister, Katie, is something more intimate and more harrowing: It's a personal video journal of one man's daily battle with one of the most devastating forms of mental illness. In high school, John Cadigan was good-looking, athletic, popular and artistically inclined; he later studied painting and printmaking at Pittsburgh's prestigious Carnegie-Mellon University. Then, during his senior year, 21-year-old John had his first psychotic episode. He thought he was being followed and that his television was sending him personal messages. Completely immobilized, unable to blink or eve...