Behind Locked Doors - (Human Gorilla)

1948 directed by Budd Boetticher and starring Lucille Bremer, Richard Carlson and Tor Johnson. At the behest of a pretty reporter, (wouldn’t you know) a private detective goes undercover as a patient in a seedy sanitarium in search of a crooked judge who may be hiding from the police. The two plan to split the $10,000 reward for the judge's capture. As the reporter and detective begin to fall in love, the detective also falls deeper into danger from the nutso patients and a villainous attendant who likes hurting people.