Actor Shaun Evans and executive producer Tom Leggett join Justin Crosby on TellyCast to discuss Betrayal — ITV Studios and Mammoth Screen’s gripping new espionage drama.

Best known for Endeavour, Shaun takes on a very different kind of spy in Betrayal, playing MI5 operative John Hughes — a man navigating a collapsing marriage, shifting office politics and a looming terrorist threat no one else believes is real.

The pair reveal the five-year journey behind the series, how writer David Eldridge infused the genre with emotional truth, and why Betrayal feels unlike any spy drama you’ve seen before. They discuss its themes of trust, loyalty and midlife reckoning, as well as the show’s dark humour, grounded realism and cinematic visual style.

Betrayal premieres on ITV in early 2026 and is one of the most anticipated dramas on the ITV Studios slate.

Listen to the full conversation for an inside look at how Evans and Leggett brought this complex, modern spy story to life.

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