91:an Karlsson muckar (tror han)

In the last film of the original 91 film series two letters - one written in spite and another in love - end up in the wrong hands, while 91 and 87 as usual try to avoid ending up in military arrest.

• Åke GrönbergDirector
• Per Lennart EkströmWriter

• Stig Grybe91 Karlsson
• Holger Höglund87 Axelsson
• Gun JönssonElvira
• Fritiof BillquistRevär
• Gösta BernhardCast
• John NorrmanCast
• Siv EricksCast
• Åke GrönbergCast
• Lissi AlandhCast
• Stig JohansonCast
• Gunnar 'Knas' LindkvistCast
• Arne SöderbergCast