The second in a selection from the classic murder mysteries. Today starring Warner Oland with Boris Karloff Keye Luke
A prima donna and her admirer are both murdered backstage at the opera, and Chan is called in to unmask the killer. The initial suspect, played by Boris Karloff is an escaped lunatic with an unusual secret....
Screenplay by SCOTT DARLING and CHARLES S. BELDEN
Produced by JOHN STONE
Directed by H BRUCE UUMBERSTONE (Blackandwhite)
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