TV
An MI6 deputy's bright future takes a sharp turn after a reunion with a Russian spy forces him to question his entire life.
Last Episode Aired
2022-12-26
S1E5 — Episode 5
More shocking secrets come to light as an unlikely team works to expose the truth, with lives and the very future of government hanging in the balance.
Where to Watch
Stream
Netflix
Netflix Standard with Ads
Netflix
Netflix Standard with Ads
Availability data provided by JustWatch via TMDB
Billed Cast
Charlie Cox
Adam Lawrence
Olga Kurylenko
Kara Yusova
Oona Chaplin
Maddy De Costa
Ciarán Hinds
Sir Martin Angelis
Check-In Log
Episode Watch Tracker
Check off episodes as you watch (saved in browser — sign in anytime to sync).
Loading season episodes...
Spoiler-Safe Screening Room
Episode & Series Discussions 0
Dedicated threads unlock on each episode's premiere day. Inline [spoiler] tags stay blurred until clicked.
Join the Screening Room
Sign in to post episode reactions, fan theories, and upvote community dispatches.
Loading discussion thread...
Audience Ledger
Community Micro-Reviews
Concise 1-sentence dispatches from DidItDrop members.
No micro-reviews yet — rate 1–4★ above and log the first 1-sentence take.
Double Feature
More Like This
Recommended titles paired with Treason.
