Reparto (12)
Chester MorrisHoratio 'Boston Blackie' Black
June VincentDoris Howell
Richard LaneInsp. William R. Farraday
Patricia BarryJoan Howell (as Patricia White)
George E. StoneThe Runt
Frank SullySgt. Matthews
Edward NorrisIgor Borio
Fay BakerMargie O'Reilly, alias Sandra Doray
William ForrestMason Carter
Sarah SelbyClaire Carter
Mary CurrierHelen Kenyon
Bess FlowersParty guest