Boris Shlikhting

Character: Dmitriy Orlov / Leon Couturier

Yuliya Solntseva

Character: Bella / Margarita Couturier

Antonin Pankryshev

Character: Lieutenant Sobolevskiy

Leonid Yurenyov

Character: Counterintelligence director

Vsevolod Massino

Character: Simenukhin, dentist

Naum Rogozhin

Character: Tumanovich, investigator

Vladimir Uralskiy

Character: Secretary of the underground organisation

Iosif Mindlin

Character: