Red Mist

Horror, from the director of Shrooms, following a doctor who administers a powerful and untested cocktail of drugs to a coma victim. But instead of curing him, it triggers a powerful out-of-body experience and enables the patient - a depraved and dangerous loner - to inhabit other people's bodies and, through them, take revenge on the medical students who were accidentally responsible for his condition. Also released under the title Freakdog.