St. Osmund's

A film crew putting together a documentary on an abandoned insane asylum finally get permission to enter the building. They find themselves trapped, plagued by visions of the patients who were treated by a religious zealot with archaic methods of therapy.

https://www.ganjingworld.com/zh-CN/gjwplus/detail/st-osmund-s/1h853s0tlrp6kaJGear5cDPsE1jj1c