This episode is the penultimate chapter of the series, focusing on the murder investigation of :
: Anna is pregnant by Letnev but keeps it a secret, while Katerina faces ongoing pressure from Georgy’s mother to divorce and move out. Key Production Facts This episode is the penultimate chapter of the
Episode 15 of the fourth season of (Шифр) was officially released in 2024 , continuing the popular retro-detective series about former intelligence officers. While the third season aired in 2022, the fourth season premiered online in March 2024 and later on Channel One in October 2024. Plot Summary: Episode 15 (2024) Plot Summary: Episode 15 (2024) : Police locate
: Police locate the car used to hit Nikitina. His character, Proskurin, remains "behind the scenes" to
: Anna and Sonya discover Polina had secret ties to the "stilyagi" (Soviet youth subculture) and had recently changed her lifestyle.
: The season was filmed without the lead actor following his tragic death in 2022. His character, Proskurin, remains "behind the scenes" to maintain the story's continuity.