Someone is attempting to steal radium stored in a bank. Death by cobra venom connects a number of murders. Charlie Chan investigates.
| Actor | Role |
|---|---|
 Sidney TolerCharlie Chan | Charlie Chan |
 Benson FongTommy Chan | Tommy Chan |
 Mantan MorelandBirmingham Brown | Birmingham Brown |
 James CardwellNed Stewart | Ned Stewart |
 Joan BarclayPaula Webb | Paula Webb |
 Walter FennerPolice Inspector Harry Davis | Police Inspector Harry Davis |
 Roy GordonWalter Fletcher | Walter Fletcher |
 Arthur LoftBradford Harris | Bradford Harris |
 Addison RichardsJohn Adams | John Adams |
 Janet WarrenRecord Machine Operator | Record Machine Operator |
 Gene RothMorgan | Morgan |
 Joe DevlinTaylor | Taylor |
 James FlavinH.R. Jarvis | H.R. Jarvis |
 George ChandlerJoe | Joe |