ITV’s High-Stakes Spy Thriller “Betrayal” Set to Redefine Espionage Drama With Shaun Evans at the Center

ITV is gearing up for what promises to be one of its most gripping espionage dramas in recent memory with the upcoming series Betrayal, starring Shaun Evans, known for his roles in Endeavour and Vigil. Described by insiders as a “nerve-shredding spy thriller,” the series plunges viewers deep into the shadowy underworld of MI5, where trust is scarce, every decision carries life-or-death consequences, and the line between friend and foe is razor-thin.

Evans stars as John Hughes, a battle-worn intelligence officer whose carefully controlled world is shattered following a clandestine encounter with British-Iranian informant Ehsan. The meeting quickly escalates into brutal bloodshed, thrusting Hughes into a deadly spiral of suspicion, betrayal, and danger — both from external enemies and from within his own ranks. The incident sends shockwaves through MI5 and triggers scrutiny from superiors, including Simone Grant, played by Nikki Amuka-Bird.

Set against a backdrop of escalating political tension and personal turmoil, Hughes’ personal life is also thrown into chaos. His marriage to GP Claire (Romola Garai, Atonement) suffers under the strain, further complicated by the arrival of ambitious MI6 operative Mehreen Askari-Evans (Zahra Ahmadi), whose presence threatens to tip the scales in this high-stakes power game.

Filming is currently underway in Manchester and Liverpool under the direction of Julian Jarrold (A Very Royal Scandal) and with a screenplay by David Eldridge. The series is slated for a 2026 release across ITV1, STV, ITVX, and STV Player.

A Star-Studded Cast Brings the Spy World to Life

Alongside Evans and Garai, the series boasts a formidable ensemble, including Gamba Cole (The Outlaws), Omid Djalili (His Dark Materials), Matthew Tennyson (Grantchester), Hayley Tamaddon (Coronation Street), and Anthony Flanagan (House of the Dragon). The supporting cast is bolstered by Paddy Rowan, Waj Ali, Karim Kadjar, Emma Cunniffe, Georgina Rylance, Ben Lambert, Julia Watson, and Julian Wadham, with newcomers Elham Karimpour, Aidan Rivers, Corin Silva, and Eliza Agrosoaie adding fresh energy.

Shaun Evans expressed his excitement at returning to ITV for this “exceptionally well-written and timely project,” praising the collaboration with Eldridge and Mammoth Screen. “It’s a great privilege to bring to life this insightful take on espionage,” he said.

What to Expect From “Betrayal”

Betrayal promises to deliver edge-of-your-seat suspense with a story that explores the precarious balance between duty, loyalty, and personal morality. Each twist and turn puts Hughes’ career, freedom, and life at risk. Viewers can anticipate intense confrontations, shocking revelations, and an intricate plot where even casual conversations may hide deadly intentions.

With its intricate storytelling, high production values, and emotionally charged performances, Betrayal is positioned to be ITV’s defining spy thriller of the decade.

Fans of spy dramas, political thrillers, and high-stakes action should mark their calendars — Betrayal is shaping up to be a television event that will keep viewers guessing until the very last frame.

Release Date: 2026 (ITV1, STV, ITVX, STV Player)
Filming Locations: Manchester and Liverpool
Lead Cast: Shaun Evans, Romola Garai, Nikki Amuka-Bird, Zahra Ahmadi