Ryszard Malewicz, a young inventor, is out of work. He had been waiting for months for a response from the ministry to which he had sent plans for his invention, an explosive of extraordinary power. Desperate Ryszard is comforted by his mother and his fiancée Maria.
Mieczysław Cybulski
Ryszard Malevich, Maria's fiancé
Maria Bogda
Maria
Lena Żelichowska
Irma, a member of the gang
Tekla Trapszo
Ryszard's Mother
Kazimierz Junosza-Stepowski
The Baron, head of the gang
Artur Socha
"Engineer", member of the gang
Stanisław Sielański
Kwiatek, the Baron's mute servant, member of the gang
Feliks Szczepański
Stefan, Ryszard's Friend
Nina Swierczewska
Julia, the Malevichs' maid
Jan Kurnakowicz
Józiuk
Helena Buczyńska
Petronela, the Malevichs' housekeeper
Wanda Jarszewska
Passenger on the train
