Reparto (11)
Chester MorrisHoratio 'Boston Blackie' Black
Jeff DonnellAnne Parks Duncan
Richard LaneInspector John Farraday
Dusty AndersonSandra
George E. StoneThe Runt
Frank SullyDetective Sergeant Matthews
Marvin MillerDr. Nejino
Wilton GraffRex Duncan
Murray AlperEddie Alexander, Chauffeur
Forbes MurrayDr. Purcell Nash
Joseph Crehan'Jumbo' Madigan - Pawnbroker