4 episodes
First episode: E1

John Hughes joined MI5 during the war on terror and was at the forefront of averting the biggest terrorist plots on UK soil. Now in his mid 40s and married with two children he’s struggling to adapt to the new MI5, where threats to national security have changed and he’s forced to adapt to the values of a progressive work environment.
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4 episodes
First episode: E1Quick answers about this series, release status, and episode totals.
Betrayal first aired on February 8, 2026.
Betrayal currently has 1 season and 4 episodes.
No official next-episode air date is listed for Betrayal right now.