The Whispering Shadow is a 1933 American pre-Code mystery[2] serial film directed by Colbert Clark and Albert Herman and starring Béla Lugosi in his first of five serial roles.

The serial was filmed in 12 days and was the last role for actor Karl Dane.

The series is notable for the constant false clues and decoy actions that make nearly everybody a suspect.

[4] The cinematography mimicked that of Karl Freund in Universal's Dracula - for example, using close ups of the actors' eyes - in order to take advantage of Bela Lugosi's fame as the star of that film.

[4] Harmon and Glut comment on that "If Street & Smith, owners of the original [The] Shadow of magazine and radio fame, had found out about the owner of the whisper, they might have sued.