When the enemy is closer than you think, who do you trust?
Secret Service
2026 • 1 season • 6.5
A British intelligence officer Kate Henderson races against time to uncover a UK politician's potential ties with the Kremlin, risking her reputation and family, as a murder and election loom.
Episodes
Top cast
Gemma Arterton
Kate Henderson
Rafe Spall
Stuart Henderson
Alexander Terentyev
Sergei Malinski
Roger Allam
Sir Alan Brabazon
Avi Nash
Ravindra Sangvhi
Mark Stanley
Ryan Walker
Alex Kingston
Rose Trewen
Amaka Okafor
Imogen Conrad
Khalid Abdalla
Zak Hussein
Aoife Hinds
Julie Price
Rochenda Sandall
Melissa Morris
Lydia Leonard
Amanda Walker
