
Sickan, the leader of the criminal Jönsson gang is incarcerated in a mental institution, attended by Dr M.A. Busé, who admire a handbook in crime that Sickan has been writing. Blackmailed by the nefarious banker Wall-Enberg, Dr Busé and Sickan's partners Vanheden and Dynamite-Harry execute Sickan's plan of stealing the valuable Black Diamond of the Romanovs from the National Museum.
Genres:

Ulf Brunnberg as Ragnar Vanheden

Björn Gustafson as Dynamit-Harry

Peter Haber as Dr. Max Adrian Busé

Birgitta Andersson as Doris

Elias Ringquist as Lillis

Björn Granath as Lohman

Pontus Gustafsson as Andersson

Bernt Lindqvist as The Chief of Police

Per Grundén as Wall-Enberg

Weiron Holmberg as Biffen Johansson

Lena T. Hansson as Busé's secretary

Rikard Wolff as Count Romanoff

Thomas Segerström as Guard

Jonas Uddenmyr as Guard

Karl Erik Andersen as Jailer

Ulf Eriksson as Patient

Sten Hellström as Patient

Jan Mybrand as Keeper

Kjell-Hugo Grandin as

Ulf Friberg as

Suzanne Ernrup as

Marianne Karlbeck as
Made by edimario