But Why Is That?

Leonid Ivanov-Rayev

As Chief engineer

Vladimir Romashkov

As Zotov, master

Fyodor Bogdanov

As Factory director

Olga Rozevskaya

As Zoya, Zotov's daughter

Nikolay Mikhaylov

As Ilya Ivanov, intern

Nikolay Wildgrube

As Aleksey