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)
