Betrayal (season 1)

Betrayal is a gripping espionage thriller series that premiered on ITV in 2026. The first season follows MI5 operative John Hughes, played by Shaun Evans, who stumbles upon a chilling national security threat during a clandestine meeting with a British-Iranian informant linked to Manchester gangland figures. After the informant is assassinated and John kills the attacker in self-defense, he faces intense internal scrutiny from superiors like Simone Grant while straining his marriage to Claire amid the secrecy of his world. Teaming up reluctantly with intelligence operative Mehreen Askari-Evans, initially assigned to replace him, John uncovers ties to a hardline Iranian faction and possible enemies within his agency, racing against time to thwart an imminent attack on UK soil.