Inner Sanctum (1948)
Director: Lew Landers
Actors: Charles Russell, Mary Beth Hughes, Dale Belding, Fritz Leiber, Eve Miller, Nana Bryant, Billy House
Runtime: 62 min.
A man kills his wife at a train station and a young boy witnesses the murder. Trapped in town by a torrential rainstorm, the murderer takes refuge in a boarding house where the boy just happens to live with his mother.