As always, Sickan has come up with a new plan. This time he wants to rob the IKEA furniture store. During their nightly break-in Sickan discovers that the store is used as a secret smuggling central for sending American computers to the Soviet Union. The computers are picked up by Soviet submarines sneaking into the Swedish archipelago. Naturally, it is their arch enemy Wall-Enberg who is behind all of this.
Unfortunately the movie Jönssonligan dyker upp igen is not yet available on HBO Max.
| Directing | Mikael Ekman | Director |
| Writing | Rolf Börjlind | Screenplay |
| Writing | Gösta Ekman | Screenplay |
| Writing | Mikael Ekman | Screenplay |
| Production | Waldemar Bergendahl | Producer |
| Production | Ingemar Ejve | Producer |
| Production | Jan Marnell | Production Manager |
| Camera | Gunnar Källström | Director of Photography |
| Sound | Ragnar Grippe | Original Music Composer |
| Art | Bengt Peters | Production Design |
| Editing | Jan Persson | Editor |
| Directing | Mona Haskel | Script Supervisor |
| Costume & Make-Up | Mona Theresia Forsén | Costume Design |
| Costume & Make-Up | Inger Pehrsson | Costume Design |
| Costume & Make-Up | Suzanne Bergmark | Makeup Department Head |
