A man mixed up in suspicious activity is murdered in the studio of photographer Ilmari Lavio. At the same time a charming woman has entered the studio, but Lavio does not want to report her to the police. The photographer begins to follow the beauty who calls herself Soile Mäntymaa and through her traces a league of spies.
| Actor | Role |
|---|---|
 Dolly von AlfthanSoile Mäntymaa | Soile Mäntymaa |
 Pentti SaaresIlmari Lavio | Ilmari Lavio |
 Ville SalminenAndersson | Andersson |
| EEnsio JoukoRautala | Rautala |
| EEero LeväluomaKoskimaa | Koskimaa |
| AAssi RaineLulu | Lulu |
| EErkki UotilaSimola | Simola |
 Sven RelanderMäntymaa | Mäntymaa |
 Pentti ViljanenMasa | Masa |
| RRunar SchaumanLundman | Lundman |
| AAune HämeMrs. Andersson | Mrs. Andersson |
| VViljo HuttunenGranlund | Granlund |
| JJalmari LauriDetective | Detective |
 Vilho SiivolaMan in jail | Man in jail |
| KKalle ViherpuuMan in jail | Man in jail |
| SSulo AutereJaakko Jeremias Laakso | Jaakko Jeremias Laakso |
| KKauko LahtinenTailer | Tailer |
| VVilhelm LindströmHead waiter | Head waiter |