New ITV spy thriller Betrayal star Shaun Evans as John, an MI5 agent who finds himself under investigation at work while his marriage is crumbling down around him.

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Not only that, but John also becomes convinced that an attack on the UK is imminent, led by a hardline faction of the Iranian regime.

The drama plays out across four parts, and tells a specific, individual story. But could John potentially return in a second season, to take on a new threat and grapple more with his personal issues? Shaun Evans spoke exclusively with RadioTimes.com about this very topic.

"We set out to make a four-parter which was strong and felt like it had no filler, that it wasn't hanging around, that it was tight and concise, and that the story was really strong," Evans said. "And then you offer that to the world, and if there's an appetite for more, then we will get together and discuss whether there's more story to tell."

Shaun Evans as John Hughes in Betrayal, wearing a black shirt and stood by a wall.
Shaun Evans as John Hughes in Betrayal. Mammoth Screen for ITV

Given this, it certainly sounds like the series could theoretically return. However, Evans was quick to clarify that Betrayal was not specifically designed as a returning series.

"It wasn't like, 'This is a brilliant setup for running and running and running'," he said. "I think you’re on a hiding to nothing if you do that. To me, it feels quite cynical."

John's wife Claire is played in the series by Romola Garai, while Zahra Ahmadi plays Mehreen Askari-Evans, an intelligence operative who is tasked with taking over John’s duties while he is investigated.

Other cast members who also play key roles include Gamba Cole (The Outlaws), Omid Djalili (His Dark Materials), Matthew Tennyson (Grantchester), Hayley Tamaddon (Unforgotten), Anthony Flanagan (House of the Dragon), Paddy Rowan (G’wed), Waj Ali (Out There).

Betrayal will premiere at 9pm on Sunday 8th February on ITV1 and ITVX in 2026.

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Authors

A headshot of RadioTimes.com drama writer James Hibbs. He has fair hair and stubble is smiling and standing outside in a garden
James HibbsDrama Writer

James Hibbs is a Drama Writer for Radio Times, covering programmes across both streaming platforms and linear channels. He previously worked in PR, first for a B2B agency and subsequently for international TV production company Fremantle. He possesses a BA in English and Theatre Studies and an NCTJ Level 5 Diploma in Journalism.

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