- 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)
- Steven Elder (Anthony Fletcher)
- Alma Prelec (Lena Savic)
- Galaxie Clear (Fiona Henderson)
- Harley Barton (Gus Henderson)
Secret Service — S1E5
Episode: Episode 5
Air Date: 2026-05-05
Runtime: 46 min
Overview
Kate runs Cyclops in an audacious mission inside Moscow Secret Service HQ to finally trap the MI6 mole.