Рёрёс„сђ 4 Сѓрµр·рѕрѕ 7 Сѓрµсђрёсџ 2022 May 2026

While the third season aired in late 2022, the 16-episode fourth season premiered on streaming platforms like Wink and Kinopoisk in March 2024 and on Channel One in October 2024.

She struggles with a secret pregnancy by Letnev, which she hides from her peers.

Just as Petr Natanovich joins the investigation, Volynin's body disappears from the morgue. While this causes panic for Korzun, Katerina views it as proof that the death was a calculated murder rather than an accident. While the third season aired in late 2022,

She faces domestic pressure from Georgy’s mother, who is actively trying to force her to leave their shared apartment and divorce her husband.

The season follows the series' established structure, where every four episodes typically cover one major criminal case. Шифр (телесериал) - Википедия While this causes panic for Korzun, Katerina views

The tension peaks when Shefner catches Sonya searching through his personal belongings. Character Arcs in Season 4

The episode revolves around the mysterious disappearance of a body and the meticulous gathering of evidence by the former GRU codebreakers. While this causes panic for Korzun

Sonya infiltrates Shefner’s apartment looking for a connection to the victim. She discovers missing military books from Volynin's home and a note in Shefner’s diary confirming a meeting with him on the day he died.