Sigge Fürst

Policeman Björk

Elof Ahrle

Nicke Karlsson

Ulf Johansson

Peters

Björn Berglund

Prof. Rasmusson

Arne Källerud

Kalle's Father

Solveig Hedengran

Kalle's Mother

Britta Brunius

Mia Lisander

Börje Mellvig

Stenberg

Birger Åsander

Blom

Eric von Gegerfelt

Chief Constable Öman (uncredited)