What I create. I can destroy. Night Key is directed by Lloyd Corrigan and adapted to screenplay by Jack Moffitt & Tristam Tupper from a story by William A. Pierce. It stars Boris Karloff, Jean Rogers, Warren Hull and Samuel S. Hinds. Music is by Louis Forbes and cinematography by George Robinson. Plot sees Karloff as aging inventor David Mallory, who once again finds himself cheated by security business boss Stephen Ranger (Hinds). With his eyesight failing and a daughter (Rogers) he wants to set up before he passes on, Mallory decides to teach the scheming Ranger a lesson. However, the crim...