On screen
Cast
14 credited performers
Assen Milanov
Major Terziev
Nikola Galabov
Leytenant Kirov
Andrey Chaprazov
Engineer Ablamov
Valentina Borisova
Yuliya Beleva
Lyubomir Dimitrov
Lechev
Yordan Matev
Prodanov
Artwork unavailable
Ivan Hadzhirachev
Direktor
Artwork unavailable
Sonya Vasileva
The laboratory assistant
Georgi Popov
Operator
Leo Conforti
Bay Stoyan
Mariya Stefanova
Lyubka
Artwork unavailable
Nadezhda Vakavchieva
Character not listed
Dimitar Panov
Character not listed
Artwork unavailable
Tzenko Boyadzhiev
Character not listed