'Gripping' ITV drama with 'shocking twists' sounds like the ultimate thriller binge


Kevin McKidd leads the cast of ITV's upcoming psychological thriller, The Only Suspect, which begins filming in London this Spring


Kevin McKidd© JSquared Photography
Nicky Morris
Nicky MorrisActing TV and Film Editor
2 minutes ago
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ITV has a gripping new thriller in the works, and it sounds unmissable. 

The upcoming psychological series, titled The Only Suspect, is based on the bestselling novel by Louise Candlish and is billed as a "gripping, twisting thriller" which "explores obsession, deception, betrayal, the consequences of the recklessness of youth and secrets that refuse to stay hidden". 

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KEVIN MCKIDD © Getty Images
Kevin McKidd is known for playing Dr. Owen Hunt in Grey's Anatomy

Starring Grey's Anatomy star Kevin McKidd, the story follows a man named Alex, who is hiding a devastating, long-buried secret that threatens to destroy his life. 

As a big thriller fan, I'm definitely keeping my eye out for this one. Not only is the series penned by Simon Ashdown, who has writing credits on tense thrillers Our House and Trigger Point, but I can't wait to see Kevin McKidd swap the Grey Sloan Memorial Hospital for London's leafy suburbs.

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Keep reading to find out more…

What to expect from The Only Suspect

The story follows couple Alex and Beth, who live a picture-perfect life in a leafy London suburb which hides a devastating truth. 

The story moves between the present day and mid-90s Camden, opening during the sweltering summer of 1995, when a young man buries a body during a violent storm. 

Kevin McKidd© JSquared Photography
Kevin stars as Alex in the ITV thriller

The synopsis continues: "Who the victim is, and why they were killed, is a mystery that tantalisingly threads through the narrative as past and present collide.

"Thirty years later, another heatwave grips a very different world. The abandoned railway

track where the body was hidden - running behind Alex and Beth's street - is being transformed into a nature trail, spearheaded by Beth herself. What is a triumph for the neighbourhood instead threatens catastrophe for Alex. Because Alex is the young man who buried the body."

police officer next to police car
Writer Simon Ashdown's previous credits include Trigger Point, starring Vicky McClure

"Having spent decades living under an assumed name, Alex now faces the unravelling of everything he has built. As diggers prepare to break ground on the very spot where his secret lies, his carefully constructed life spirals - and he must decide how far he is willing to go to keep the truth buried."

Featuring author Louise Candlish's trademark whiplash plot twists and turns, the series promises to keep viewers "enthralled, delivering an intoxicating blend of emotional punch and edge-of-your-seat tension, highlighting two starkly contrasting eras". 

Who stars in The Only Suspect? 

Kevin McKidd leads the cast as Alex. Speaking about the role, he said in a statement: "Working with ITV on The Only Suspect feels like coming home for me. 

Kevin McKidd as Owen Hunt on Grey's Anatomy in 2009© Getty
Kevin played Owen Hunt on Grey's Anatomy for 18 years

"As an actor, the complex and multilayered role of Alex is exciting to explore and I can't wait to collaborate with Farren, the whole team at Red Planet Pictures and an amazing ensemble of great British actors," he added. 

Further casting details have yet to be announced. 

When will The Only Suspect be released?

ITV has yet to confirm a release date, but with filming set to begin in London this Spring, we'd imagine a late 2026 or early 2027 is likely.

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