Biotherapy (1986) is a Horror, Science Fiction film that follows a group of Japanese scientists are stalked and viciously butchered by a creepy alien in a trenchcoat. Biotherapy is not currently listed with streaming providers in your selected region, but availability can change over time. It has a user rating of 6.1 out of 10 from 11 votes. Fans of horror movies may also want to explore similar titles below.