A closed room mystery begins when an infamous tycoon is found dead in his bath tub. The famous police lieutenant Palmu is summoned to investigate.
| Directing | Matti Kassila | Director |
| Writing | Mika Waltari | Novel |
| Camera | Olavi Tuomi | Director of Photography |
| Editing | Elmer Lahti | Editor |
| Writing | Matti Kassila | Screenplay |
| Sound | Osmo Lindeman | Original Music Composer |
| Directing | Leena Valkeala | Script Supervisor |
| Costume & Make-Up | Laura Saalas | Costume Design |
| Art | Aarre Koivisto | Production Design |
| Costume & Make-Up | Bure Litonius | Costume Consultant |
| Production | Kaarlo Wilska | Location Manager |
| Sound | Kurt Vilja | Sound Re-Recording Mixer |
| Production | T.J. Särkkä | Executive Producer |
| Sound | Pentti Hämäläinen | Production Sound Mixer |
