The BEST episodes of Secret Service

Every episode of Secret Service ever, ranked from best to worst by thousands of votes from fans of the show. The best episodes of Secret Service!

When the enemy is closer than you think, who do you trust? Gemma Arterton is the MI6 agent hellbent on uncovering buried secrets in a dangerous world.

Last Updated: 5/27/2026Network: ITV1Status: Continuing

7.42

57 votes

#1 - Episode 4

Season 1 - Episode 4 - Aired 5/4/2026

The pressure mounts on Kate when the Russians target her family, and Rav follows clues to Geneva.

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7.36

66 votes

#2 - Episode 2

Season 1 - Episode 2 - Aired 4/28/2026

Kate suspects that her agent is in danger and, defying orders, prepares to rescue her.

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7.29

62 votes

#3 - Episode 5

Season 1 - Episode 5 - Aired 5/5/2026

Kate runs Cyclops in an audacious mission inside Moscow Secret Service HQ to finally trap the MI6 mole.

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7.15

67 votes

#4 - Episode 3

Season 1 - Episode 3 - Aired 5/3/2026

Kate's bold rescue mission in Malta backfires and she draws flak from all sides.

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6.93

91 votes

#5 - Episode 1

Season 1 - Episode 1 - Aired 4/27/2026

An MI6 agent learns that there is a Russian asset in the UK Cabinet.

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