The owner of an ice cream parlor in a coastal town is murdered. The investigation is conducted by platoon leader Rogowski, but soon he is joined by Lieutenant Joanna Szczęsna from the voivodeship headquarters.
| Directing | Sylwester Szyszko | Director |
| Writing | Jerzy Janicki | Screenplay |
| Sound | Jerzy Matuszkiewicz | Music |
| Crew | Jacek Stachlewski | Cinematography |
| Art | Jerzy Maslowski | Production Design |
| Costume & Make-Up | Krystyna Maslowska | Costume Design |
| Sound | Leszek Wronko | Sound |
| Editing | Zenon Piórecki | Editor |
| Costume & Make-Up | Ewa Wende | Makeup Artist |
| Production | Wiesław Grzelczak | Production Manager |
| Writing | Jerzy Janicki | Theatre Play |