This is the Spanish-language version, with a different cast and crew, of the Charlie Chan film Charlie Chan Carries On, in which Charlie sets out to discover the killer of an American found dead in a London hotel room.
| Actor | Role |
|---|---|
 Manuel ArbóCharlie Chan | Charlie Chan |
 Juan TorenaDick Kennaway | Dick Kennaway |
 Ana María CustodioElen Potter | Elen Potter |
 Rafael CalvoInspector Duff | Inspector Duff |
 Raul RoulienMax Minchin | Max Minchin |
 Blanca de CastejónPeggy Minchin | Peggy Minchin |
 Miguel LigeroFrank Benbow | Frank Benbow |
| AAmalia SanteeSeñora Benbow | Señora Benbow |
 Carmen RodríguezSeñora Rockwel | Señora Rockwel |
 Julio VillarrealDoctor Lofton | Doctor Lofton |
 José NietoCapitán Kin | Capitán Kin |
 Carlos Díaz de MendozaWalter Decker | Walter Decker |
 Lia ToráSybil Conway | Sybil Conway |
 Martín GarralagaJohn Ross | John Ross |
| AAntonio VidalPaul Nielson | Paul Nielson |
| RRalph NavarroInspector Gardner | Inspector Gardner |