
Three boys are helping Soviet Intelligence to catch German spies during WWII.
Sasha Grigoryev
Mishka Alekseyev
Igor Urumbekov
Vaska Kozhukh

Vladimir Lelyotko
Styopka Panfilov

Pavel Luspekayev
Ivan Vasilyevich, KGB major

Oleg Belov
Aleksey Burakov

Aleksandr Mikhaylov
Uncle Petya / German spy

Fyodor Odinokov
Semyon, truck driver

Aristarkh Livanov
Zhora "Brunette"

Andrey Krupenin
Shurka "Krendel"

Aleksandr Lipov
Valeriy Kaplunov, rocketeer

Konstantin Adashevsky
Voronov, clock master

Lyudmila Arzhannikova
House superintendent

Valentina Ananina
Mishka's mother
I. Astapov

Lyudmila Glazova
Woman on the street market