Hanka Ordonówna

Rita Holm, Singer and intelligence agent

Bogusław Samborski

Pedro

Jerzy Leszczyński

Professor Skalski, Jerzy's father

Jerzy Pichelski

Engineer Jerzy Skalski

Igo Sym

Head of Intelligence

Lena Żelichowska

Polish counterintelligence agent

Wanda Jarszewska

Shop Customer

Alina Żeliska

Customer

Andrzej Bogucki

Man in Cafe

Lech Owron

Man talking to Skalski

Roman Dereń

Caretaker in Laboratory

Aleksander Suchcicki

Skalski's Colleague

Zdzisław Karczewski

Albert

Loda Niemirzanka

Mieczysław Krawicz