The Ciphers
Season 4
Four women who are connected by a military past - work in the GRU special department - converge again to conduct investigations and help the investigating authorities in particularly complicated cases. Possessing phenomenal analytical skills, Irina, Anna, Sofya and Katerina, risking themselves, as well as the well-being of their own families, catch criminals who threaten the lives of ordinary people and the whole country as a whole.
