Åke Söderblom

as Jimmy Smith, jur. stud.

Annalisa Ericson

as Betty Carlberg, hans fästmö

Thor Modéen

as Aldor Johnsson

Katie Rolfsen

as Chicago-Rosie

Torsten Winge

as Röde Magnus

Carl Hagman

as Poliskommissarien

Carl Reinholdz

as Detektivkonstapel