The Bat (1959)

A 1959 American crime-mystery thriller starring Vincent Price and Agnes Moorehead. It is a film adaptation of the story, which began as a 1908 novel The Circular Staircase by Mary Roberts Rinehart,. She later adapted it (with Avery Hopwood) into the 1920 play The Bat. The first film version of the play was a 1926 silent film.