Winter Ave Zoli
A closed hospital is the central point for the most recent spate of murders by a serial killer dubbed the Nighthawk. Roslyn (Foster) has been recruited to file old patient records, and soon discovers a disturbing connection between the victims - they were all once patients at the hospital. She passes this information along to the detective in charge of hunting down the murderer, Det. Marling (Biehn)
As paranoia spirals out of control, Roslyn believes anybody could be guilty, even her own husband. Roslyn confides in Dr. Clement (Elwes), a British psychiatrist who works nights on the fifth floor. There, Roslyn discovers a therapy room labeled Psych 9, a barbaric-looking mental health treatment room with a story of its own.
To solve the mystery of the Nighthawk murders and unravel her terrifying past, Roslyn and Dr. Clement must uncover the shocking secret that lies buried deep within Psych 9.
Summary mainly from DVD