ITV has confirmed brand new spy thriller Betrayal is in production, starring Endeavour actor Shaun Evans in the cast.

His character is described as a "troubled operative in the clandestine?world of MI5". Shaun?Evans?plays John Hughes, a spy?trying to avert a?serious and dark?threat to national security while making sense of his own place in the world…

Here's everything you need to know about the upcoming thriller, including writer, plot, cast, and start date.

What's the plot of Betrayal on ITV1 and ITVX?

ITV's Betrayal will introduce MI5 agent John Hughes, a man battling his own demons whilst also trying to save the world. Think James Bond, but with a smaller budget.

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…

The ITV synopsis tells us: "On a hunch, John meets Ehsan, a British Iranian man with links to the Manchester gangland who claims he has intelligence about a plot on UK soil.?

"But, before he can share intel, Ehsan is executed by a lone gunman, and?John impulsively kills the assassin in retaliation.?This triggers a chain of events which puts John in direct collision with his superiors who are furious?that?he appears to have got involved in a Manchester gang turf war."

In order to save his career and reputation, John begins to look into Ehsan's past.?All the while struggling with his own mental health after having killed a man.

Who wrote Betrayal on ITV1?

Betrayal was written by?award-winning?playwright and screenwriter?David Eldridge.

David is best known for writing the TV movie Our Hidden Lives, and The Scandalous Lady W.

The script is described as "emotionally intelligent, thrilling?and darkly funny thriller".

David Eldridge said: "I'm thrilled be working with ITV and Mammoth Screen on?Betrayal, an espionage drama rooted as much in the trials and betrayals of family life as?in?the bloody, dangerous business of spying.

"It's also a pleasure to be collaborating again with?Shaun?Evans?for whom I have created the show's leading role – out of favour intelligence officer John Hughes."

Shaun and David previously worked together on The Scandalous Lady W.

Who plays John Hughes in Betrayal?

Actor Shaun?Evans, 44, portrays MI5 agent John Hughes in Betrayal on ITV1. Shaun came to fame playing John Paul Keating in the Channel 4 comedy Teachers, opposite Andrew Lincoln and Navin Chowdhry.

The Liverpool-born actor went on to appear in Whitechapel, and Silk, before appearing as Glover in series one of Vigil in 2021.

However, Shaun is definitely best known for playing Endeavour Morse in the ITV drama Endeavour. He portrayed the famous detective from 2012 to 2023.

In 2024, he'll portray John Sweeney in the true crime dramatisation Until I Kill You, opposite Anna Maxwell Martin.

Who else is in the cast?

ITV has not yet revealed the supporting cast of Betrayal on ITV1.

More announcements will be made in the coming months, so watch this space!

When is the start date of Betrayal on ITV?

Betrayal is in the very early stages of development. It is set to begin filming in 2025.

That means it is unlikely to land on ITV until late 2025 or early 2026.

Betrayal begins filming for ITV in 2025.