Włodzimierz Gołaczyński as Janek Borowski

Dariya Mikhaylova as Tanya Sokolova

Leonid Bronevoy as Jean Challot

Antoni Jurasz as Stanisław Wierzański

Aleksandr Mikhaylov as Gido 'Swede' Torstensen

Olga Ostroumova as Valentina Sokolova

Mikhail Gluzskiy as Heinrich Scharf

Algimantas Masiulis as Max Abendrot

Luchezar Stoyanov as Bordet

Igor Vasilev as Lancier

Leon Niemczyk as Berget

Józef Pieracki as Janek's teacher

Aleksandr Vokach as Welt

Olev Eskola as Rogers

Grigoriy Lyampe as Robert

Mikhail Zhigalov as Magnus

Leonid Markov as Lafonte

Georgi Martirosyan as Pilot

Shavkat Gaziyev as Jose Ramiro

Jerzy Owoc as Janek's father (uncredited)