Kolmastoista koputus
Two Finnish naval captains face spies in Gothenburg harbor during the second world war.
- Genre: Comedy, Thriller
- Director: Ilmari Unho
- Cast: Joel Rinne, Tauno Palo, Hilkka Helinä, Eine Laine, Mailis Vaaja
- Country: Finland
Two Finnish naval captains face spies in Gothenburg harbor during the second world war.