Jerry Marzinsky...psychologist that believes schizophrenia/psychosis is caused by evil spirits
I have a family member that suffers from this condition and Marzinsky's methods have been the best tools we've had for helping them. Marzinsky worked as a psychologist in prisons and state mental hospitals for over 30 years treating patients with psychosis. Has an incredible story about how he started having breakthroughs with his patients when he started trying to speak with the voices people were hearing, instead of trying to pretend they didn't exist and medicating the patients. Supernatural things began to happen. It's insane, and I think he'll be proved correct with his assumptions in the future.
I think Freeman has had him on, but he'd be a wild guest.