"A police inspector tracks a notorious jewel thief, 'Diamond-Lasse,' to a hotel filled with eccentrics."
Valdemar Dalquist
as Greven (as Waldemar Dalquist)
Julia Cæsar
as Klara Edlund (as Julia Caesar)
Sigurd Wallén
as Gurkan
Tollie Zellman
as Amalia Blomkvist
Edvin Adolphson
as Åke Larsson
Ingrid Bergman
as Elsa Edlund
Eric Abrahamsson
as Borstis (as Eric Abrahamson)
Weyler Hildebrand
as Detective Göransson
Wiktor Andersson
as Beggar Student (uncredited)
Gunnar Asp
as Drum Player (uncredited)
Bror Berger
as Lookout at the Burglary (uncredited)
Helga Brofeldt
as Customer (uncredited)
Artur Cederborgh
as Engström (uncredited)
John Ericsson
as Man at the Auction (uncredited)
Ragnar Falck
as Gentleman (uncredited)
Arthur Fischer
as Ernst Berglund (uncredited)
Emil Fjellström
as 'Lorden' (uncredited)
Millan Fjellström
as Mrs. Andersson (uncredited)
Knut Frankman
as Man (uncredited)
Mona Geijer-Falkner
as Fish Customer (uncredited)
Carl Harald
as Police Constable (uncredited)
John Hilke
as Clerk (uncredited)
Sam Jacobsson
as Saxophone Player (uncredited)
Gösta Jonsson
as Accordion Player and Singer (uncredited)
Birger Larsson
as Guitar Player (uncredited)
Thyra Leijman-Uppström
as Mrs. Karlsson (uncredited)
Nisse Lind
Arne Lindblad
as Man Cheering on Österlånggatan (uncredited)
Hugo Lundström
as Kalle (uncredited)
Charles Redland
as Trombone Player (uncredited)
Gösta Törnblad
as Trumpet Player and Singer (uncredited)
John Wahlbom
as Man at the Statue (uncredited)
Tom Walter
as Whistling Man (uncredited)
Lisa Wirström
as Woman in White Hat (uncredited)
Erik Johansson
as Hansson (uncredited)
Börje Lundh
Makeup Artist
Gunborg Runsten
Rolf Husberg
Editor
Arne Åkermark
Art Direction
Jules Sylvain
Original Music Composer
Director
Sixten Andersson
Unit Manager
Stellan Claësson
Production Manager
Karin Swanström
Lennart Svensson
Sound Assistant
Louis Huch
Still Photographer
Sven Thermænius
Assistant Camera
Eric Bengtson
Music Coordinator
George Bisset
Translator
Gösta Stevens
Screenplay
Siegfried Fischer
Author
Sven Hansen
Sound
Åke Dahlqvist
Director of Photography
