Behind the locked doors of a mental institution resides crooked politico Judge Drake (Herbert Heyes), free from prosecution so long as he pretends to be crazy. To get the goods on Drake, private detective Ross Stewart (Richard Carlson) has himself committed to the asylum as a patient. Meanwhile, reporter Kathy Lawrence (Lucille Bremer), posing as Stewart's wife, acts as his liaison to the outside world. But when Drake figures out what's going on, he pulls strings to have Stewart meet with an "accident" during his stay at the institution. Ralf Harolde, who memorably portrayed a seedy psychiatrist in Murder My Sweet, contributes another excellent performance in Behind Locked Doors as a sympathetic attendant with Something To Hide.