A story of Igor Kurchatov - a father of Soviet nuclear weapons.
Сергей Бондарчук
as Igor Kurchatov
Георгий Жжёнов
as Vitaliy Zubavin
Николай Волков
as Abram Ioffe
Ирина Скобцева
as Marina Kurchatova
Николай Бурляев
as Fedya
Алла Покровская
as Tanya
Яков Трипольский
as Stalin
Михаил Ульянов
as Zhukov
Сергей Юрский
as Robert Oppenheimer
Олег Басилашвили
as Boris Pash
Алла Демидова
as Jane
Иннокентий Смоктуновский
as Roosevelt
