Elina Bystritskaya

Yelizaveta Muromtseva

Sergey Bondarchuk

Yuri Yershov

Sofiya Giatsintova

Anna Yershova, Yuri's Mother

Evgeniy Samoylov

Aleksandr Aganin

Yevgeni Lebedev

Fyodor Ivanovich

Aleksandr Larikov

grandpa Spirin

German Khovanov

Vasiliy Spirin

Yuriy Tolubeev

Nikolai Sladkov

Erast Garin

Koloskov

Antonina Bogdanova

aunt Polya, Muromtseva's neighbour

Sergei Karnovich-Valua

professor Valentin Osipovich

Sergey Dvoretskiy

student Sergei Andreyev

Olga Zabotkina

student Nadya

Vladimir Voronov

Ponomaryov

Sergei Karnovich-Valua

Professor Valentin Osipovich

Boris Lyoskin

Malingerer

Vladimir Chobur

Plant director

Yuri Bublikov

Plant engineer

Valentina Chemberg

Patient's mother

Gleb Selyanin

Volodya, student

Ariadna Kuznetsova

Graduate (uncredited)

Yuri Rodionov

Yura (uncredited)

Alexandra Trishko

Yard-keeper (uncredited)

Tatyana Khorishko

Nastenka Spirina (uncredited)

Yekaterina Sobol

Patient (uncredited)