Stockholm policeman Martin Beck is called in to investigate the murder of a fellow officer. Beck and his partner, Einar Ronn, soon discover that the murdered policeman was well known to his colleagues for his excessive brutality, though his misdeeds were never reported to higher authorities. As they pursue their investigation, a sniper climbs to a roof in downtown Stockholm and starts firing at every uniformed officer he sees.
| Directing | Bo Widerberg | Director |
| Production | Per Berglund | Producer |
| Art | Ulf Axén | Production Design |
| Camera | Odd-Geir Sæther | Director of Photography |
| Directing | Stefan Jarl | Assistant Director |
| Art | Ulf Axén | Art Direction |
| Production | Stefan Jarl | Production Manager |
| Writing | Per Wahlöö | Novel |
| Editing | Sylvia Ingemarsson | Editor |
| Writing | Maj Sjöwall | Novel |
| Sound | Björn Json Lindh | Original Music Composer |
| Camera | Per Källberg | Director of Photography |
| Writing | Bo Widerberg | Screenplay |
| Editing | Bo Widerberg | Editor |
| Production | Suzanne Branner | Production Manager |
| Sound | Göran Carmback | Sound |
| Sound | Lennart Dunér | Sound |
| Sound | Peter Ekvall | Sound |
| Sound | Leif Westerlund | Sound |
| Production | Bo Arne Vibenius | Production Manager |
