
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.
Cast

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
Aldona Jasińska
Vendor

Wanda Bartówna
Malevich's neighbor (uncredited)
Jadwiga Bukojemska
(uncredited)
Stanisław Grolicki
(uncredited)

Józef Maliszewski
Priest (uncredited)

Irena Skwierczyńska
Malevich's neighbor (uncredited)
Helena Zarembina
a singing woman, a neighbor of the Malevich's (uncredited)
Crew
Jan Nowina-Przybylski
Director
Tadeusz Kończyc
Writer
Albert Wywerka
Director of Photography

Jerzy Marr
Assistant Director
Ștefan Norris
Production Design
Jacek Rotmil
Production Design
Konrad Narkiewicz
Makeup Artist
Stanisław Urbaniak
Sound
Wiktor Krupinski
Original Music Composer
Jan Maklakiewicz
Original Music Composer, Music Director
Józef Galewski
Painter