We don't have a biography for Майор КГБ Олег Костин yet. Hang in there, or go ahead and contribute one.
Перевал Дятлова Main cast, played by Пётр Фёдоров Episode 1x01: Серия 1 (Nov 16, 2020) Episode 1x03: Серия 3 (Nov 18, 2020)