Cast
Horatio «Boston Blackie» Black
Mei Ling
Inspector William R. Farraday
Les, the Bus Guide
Red, the Bar-Girl
The Runt
Detective Sergeant Matthews
Pop GerardBill Craddock 
Wong Chung Shee
Rolfe, not listed in credits
Tourist Sight-Seer, not listed in creditsMovie Theater Cashier, not listed in creditsа 
Reiber, Policeman, not listed in credits
Ah Hing, Wong's Sales Clerk, not listed in credits
Chinese Victim, not listed in creditsFantan Player, not listed in credits Fantan Player, not listed in credits Chinese Hatchet Man, not listed in credits 
Henry, the Bartender, not listed in creditsChinese Girl, not listed in creditsа 
Solicitous Tourist, not listed in creditsа
Tourist Sight-Seer, not listed in credits
Officer Jim, not listed in creditsTourist, not listed in creditsа 
Police Chemist, not listed in credits
Mac McAllister, Policeman, not listed in credits
Cynical Tourist, not listed in creditsFantan Player, not listed in credits 
Movie Theatre Ticket Taker, not listed in credits