Клара Румянова

Ivan Semenov (voice)

Тамара Дмитриева

Ivan's classmate (voice)

Antonina Dmitrieva

The teacher (voice)

Mikhail Yanshin

First doctor (voice)

Анатолий Папанов

Second doctor (voice)

Георгий Вицин

Third doctor (voice)

Вадим Курчевский

Николай Серебряков