Kalle Blomkvist and his friends intervene when a professor and his little son Rasmus are kidnapped.
as Kalle Blomkvist
as Anders Bengtsson
as Eva-Lotta Lisander
as Rasmus Rasmusson
as Sixten
as Benka
as Jonte
as Policeman Björk
as Nicke Karlsson
as Peters
as Prof. Rasmusson
as Kalle's Father
as Kalle's Mother
as Mia Lisander
as Stenberg
as Blom
as Eva-Lotta's Father (uncredited)
as Berggren (uncredited)
as Chief Constable Öman (uncredited)
as State Police (uncredited)
