출연진
Assen Milanov
Major Terziev
Nikola Galabov
Leytenant Kirov
Andrey Chaprazov
Engineer Ablamov
Валентина Борисова
Yuliya Beleva
Lyubomir Dimitrov
Lechev
Yordan Matev
Prodanov
Ivan Hadzhirachev
Direktor
Sonya Vasileva
The laboratory assistant
Georgi Popov
Operator
Leo Conforti
Bay Stoyan
Mariya Stefanova
Lyubka
Nadezhda Vakavchieva
Dimitar Panov
Tzenko Boyadzhiev