演員
Альберт Филозов
Ilya Rozhdestvensky (childhood friend and colleague)
Ирина Резникова
Svetlana Meshkova (fiancee of Anton Tikhomirov)
Андрей Мягков
Anton Dmitrievich Tikhomirov (young scientist)
Анатолий Папанов
Igor Mazin (investigator)
Ирина Мирошниченко
Inna Krotova (former lover)
Владимир Зельдин
Diaghilev (professor and supervisor of Anton Tikhomirov)
Жанна Прохоренко
Irina Tikhomirova (ex-wife)