Ty, co w Ostrej świecisz Bramie

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.

Drama

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))