Overview
The latest assignment for respected detective Charlie Chan has come directly from the government and involves the disappearance of a scientist named Harper, who was working on an extremely important serum. When the scientist is killed, Chan must sort through all very likely suspects, including the man's sister and his butler.
Cast
- Sidney Toler as Charlie Chan
- Mantan Moreland as Birmingham Brown
- Edwin Luke as Eddie Chan
- Hardie Albright as Walter Meeker
- Janet Warren as Jean Kent
- Al Bridge as Sheriff Mack
- Edith Evanson as Louise Harper
- Dorothy Granger as Stella Graham
- Cyril Delevanti as Roth
- Jack Ingram as Lloyd Archer