Secret Service (Season 1)

Secret Service (2026) is a British political thriller you can watch online on iFILM. MI5 officer Kate Henderson, played by Gemma Arterton, is handed an assignment that threatens to blow up a senior politician's career — and her own along with it.

An election is days away. A murder, a possible Kremlin connection, and a dwindling list of people Kate can actually trust. Her partner, played by Rafe Spall, knows half the picture. Her supervisor Roger Allam controls what she's allowed to see. And a contact from the other side holds pieces she can't get anywhere else. The series directed by James Marsh and Farren Blackburn plays the genre straight — intelligence work as bureaucratic obstacle course, with a personal price tag on every state secret.

The tagline asks who you trust when the enemy is already inside. That question drives every episode. Stream Secret Service (2026) online on iFILM.