The Sphinx is a 1933 American pre-Code mystery drama film directed by Phil Rosen.

Before he can see him he talks with the watching police officer, and after a while, realizes that the Garfield Investment Company just that morning went bankrupt.

During the trial he sticks to what he has seen and what he has heard, though two different doctors testify that Mr. Breen is deaf and mute since birth.

Young chronicle newspaperman Jerry Crane, in love with his good-looking girl colleague, has a feeling that Breen is a strange guy and tries to convince her not to go for interview to his house.

When Inspector Riley thinks he saw Breen hearing the playing of the piano when they are in his house, the next morning a third dead man is on the list.