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
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