The Old Dark House is a 1963 Anglo-US 'Hammer Film Productions' horror comedy film. It features Tom Poston, Robert Morley, Janette Scott, Peter Bull, Joyce Grenfell, Fenella Fielding, and Mervyn Johns.
While delivering a car, salesman Tom finds its eccentric owner Casper dead. When the car crashes in a storm, Casper's relatives invite Tom to live in their mansion, where a series of murders commence.