Roger Mills, a Harley Street specialist, is taking a sailing holiday on the Norfolk Broads. When his six guests find him at the tiller of his yacht with a smile on his face and a gunshot through his heart, all six fall under suspicion.
| Directing | Ada Neretniece | Director |
| Writing | C. P. Snow | Novel |
| Writing | Viktors Lorencs | Writer |
| Camera | Mārtiņš Kleins | Director of Photography |
| Art | Andris Merkmanis | Art Direction |
| Sound | Raimonds Pauls | Music |
| Sound | Igors Jakovļevs | Sound Director |
| Costume & Make-Up | Večella Varslavāne | Costume Design |
| Art | Mirdza Celma | Art Direction |
| Editing | Zigrīda Geistarte | Editor |
