In 1977, two secretaries working at the American embassy in Moscow become CIA operatives after their husbands die under mysterious circumstances. The series will premiere on January 15, 2026 on Peacock. In August 2024, Emilia Clarke became attached to star and be an executive producer on the series. Haley Lu Richardson joined the cast in November 2024. Adrian Lester, and Nicholas Podany were amongst those added to the cast.