The duo from the popular detective series gets their first serious job. The Hammurabi Contest stands a chance of becoming a great event at the school in Valleby. The prize is an ancient book containing the rules of solving disputes. Short before the contest starts, the book disappears in mysterious circumstances. Without the book, the contest will not take place! All the effort and dedication of pupils would be for nothing, and the school would lose its prestige. Jerry and Maja are involved from the very beginning, trying to find the lost book. Will the kids find the underlying cause of the case? A white dove will help them solve the mystery...
Unfortunately the movie JerryMaja's Detective Agency - The First Mystery is not yet available on HBO Max.
| Production | Tim King | Executive Producer |
| Directing | Josephine Bornebusch | Director |
| Writing | Mattias Grosin | Writer |
| Writing | Henrik Engström | Writer |
| Camera | Mats Axby | Director of Photography |
| Editing | Sarah Patient Nicastro | Editor |
| Production | Pontus Sjöman | Producer |
| Art | Tamara Conboy | Art Direction |
| Crew | Kevin Byrne | Special Effects |
| Sound | Ray Harman | Original Music Composer |
| Costume & Make-Up | Clara Ahlström | Costume Design |
| Production | Maggie Widstrand | Casting |
| Art | Cecilia Bornebusch | Production Design |
| Costume & Make-Up | Jenny Fred | Makeup & Hair |
| Writing | Martin Widmark | Characters |
