: Season 4 is the concluding chapter of the original project.
: 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. : Season 4 is the concluding chapter of the original project
: Filming took place in Moscow, St. Petersburg, and Kislovodsk. Episode Schedule (Season 4) Шифр (телесериал) - Википедия : Filming took place in Moscow, St
: Anna and Sonya discover Polina had secret ties to the "stilyagi" (Soviet youth subculture) and had recently changed her lifestyle. : Anna is pregnant by Letnev but keeps
: 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
: Police locate the car used to hit Nikitina.
This episode is the penultimate chapter of the series, focusing on the murder investigation of :