1938 Dramatic thriller
USA
1h 9min
When a dying man asks for Mr. Wong's help (Boris Karloff), this begins an investigation of his murder and that of two others. Spies and a formula for a poison gas are involved.
| Directed by | William Nigh |
| Written by | Houston Branch, Hugh Wiley |
| Company | Monogram PicturesExcellent Film ExchangeExcellent Film Exchange |