An engineer and his 5-year old son Rasmus are kidnapped by a group who wants to get their hands on the engineer's latest invention. Three kids become witnesses to the kidnapping and decide to follow the kidnappers to an island and attempt to make a rescue.
Unfortunately the movie Kalle Blomkvist and Rasmus is not yet available on HBO Max.
| Crew | Fred Nordström | Second Unit Cinematographer |
| Sound | Peter Grönvall | Original Music Composer |
| Art | Olle Remaeus | Production Design |
| Sound | Lars Jameson | Sound Engineer |
| Directing | Göran Carmback | Director |
| Writing | Astrid Lindgren | Novel |
| Production | Waldemar Bergendahl | Producer |
| Crew | Anna Idman | Script |
| Production | Lena Ringqvist | Casting |
| Writing | Göran Carmback | Screenplay |
| Editing | Dominika Daubenbüchel | Editor |
| Sound | Christer Furubrand | Sound Engineer |
| Crew | Kimmo Rajala | Stunt Coordinator |
| Production | Maria Bolme | Casting |
| Camera | Carl Sundberg | Director of Photography |
