Grace season 4: release date, plot, cast, trailer and more

Grace season 4
John Simm and Richie Campbell will return as DS Roy Grace and DS Glenn Branson (Image credit: ITV)

Grace season 4 sees John Simm and the rest of the cast return for more dark and sinister cases.

Based on the bestselling novels by Peter James, the crime show follows the exploits of DS Roy Grace, who has been haunted for over a decade by the disappearance of his wife Sandy. In recent years he's found happiness with forensic pathologist Cleo Morey (Zoe Tapper), but will that happiness last? 

That's one of the many questions we hope will be answered in the fourth series of this detective drama, which is now being shown on ITV1.

Grace season 5 is on the way as well having been officially ordered by ITV. With John Simm recently moving to Brighton, where the drama is filmed, it seems likely he could be playing the detective for many years to come! 

"Moving here has really helped me get into the world of Grace," he told us in a recent interview. "We film all over Brighton, Hove and the surrounding area, so I know where I am a bit more now! We didn't move here because of Grace, it was just a weird, happy accident, but it’s great not to be traveling or staying in hotels all the time, which is what my life usually is. I lived in London for so long that it feels like we've moved on holiday!" 

Here's everything we know about Grace season 4...

* SPOILERS FOR GRACE SEASON 3 AHEAD * 

Grace season 4 release date

Grace season 4 began on Sunday, September 1, 2024, at 8 pm on ITV1 and ITVX, with the remaining three episodes scheduled to follow on subsequent Sundays. The series will not be box-setted.

The fourth season is already available in the US on BritBox, after premiering on July 2, 2024.

Traveling abroad? Use a VPN to watch your usual streaming services from anywhere in the world. 

Is there a trailer for Grace season 4? 

There is! John Simm was kind enough to post it on his Instagram... 

How many episodes are there in Grace season 4? 

The fourth season of the detective drama will be longer than any of the previous series and contain four episodes. 

Grace season 4

Zoe Tapper plays Grace's girlfriend Cleo Morey (Image credit: ITV)

Grace season 4 plot - what happens? 

With Grace's girlfriend Cleo Morey discovering she's pregnant and his estranged wife Sandy seemingly trying to prove that he's also the father of her child, it's fair to say the detective has his hands full in the fourth series! 

An official synopsis from ITV reads...

"The first film in the new series is called 'Dead Man's Time'. A vicious robbery at a secluded Brighton home, draws Grace and Branson into a puzzling enquiry when thousands of pounds worth of beautiful antiques are stolen from the house. As Grace digs deeper into this mysterious crime, he unearths a web of ancient grudges - a web which leads him down a dark, murderous trail through the world of Brighton antiques, in a race against the clock, to untangle who is at the heart of this robbery, and bring Gavin Daly the answers he has been desperately chasing for many years.

"In episode two, 'Want You Dead'Grace and Branson investigate a case where nothing is truly as it first appears. When an unidentified victim is found dead in curious circumstances, the post mortem reveals more questions than it does answers. As Grace works to identify the body, hoping this might provide some crucial clue as to the killer’s motive, he soon has another death on his hands when a second victim shows up in central Brighton, discovered in similarly bizarre circumstances."                                    

Robert Glenister as Kevin Salisbury

Robert Glenister features in series four (Image credit: BBC/House Productions/Matt Squire)

"'You Are Dead' is episode three in which Grace and Branson are thrown into what is possibly their most disturbing and high-profile case yet, when an unsettling discovery of skeletal remains is unearthed by workmen digging up a path in central Brighton. Meanwhile, across the city that same morning, a victim is snatched in broad daylight. With no witnesses and no sign of who took her, Grace starts to suspect whether the victim’s fiancé is lying to the police.                                                                            

"The final episode in the series is 'Love You Dead'. When a known Brighton burglar is found dead in his car, in gruesome circumstances, his wife claims that he had turned over a new leaf, but all the evidence points to the fact the victim may still have been up to his old tricks and was breaking and entering on the night he was killed. As Grace and the team work to hone in on the circumstances leading to the victim’s death, Roy receives a call from a US police contact about a crime abroad which bears the hallmarks of a mafia hit. The police are keen to trace a woman they believe to be from Brighton, who could be in danger. As Roy scours the city to help find her, it becomes apparent he isn’t the only one looking for this mysterious woman."

ITV will have adapted 12 of Peter James' 19 Roy Grace novels after the end of season four, which means we could have a couple of seasons yet to come at least — and potentially a spin-off series based on Sandy!

"I'm writing Sandy's story as a standalone novel at the moment," James told journalists in a recent interview. "It's from her perspective from the day she leaves him and the real reason that she leaves him." 

DS Roy Grace (John Simm) and DS Branson (Richie Campbell) side by side.

DS Roy Grace (John Simm) and DS Glenn Branson (Richie Campbell). (Image credit: ITV)

Grace season 4 cast — who's in it? 

John Simm returns as DS John Grace and Richie Campbell returns as DS Glenn Branson. Other returning cast include... 

* Craig Parkinson (Line of Duty) as DS Norman Potting
* Zoë Tapper (Liar) as Cleo Morey
* Laura Elphinstone (Line of Duty) as DS Bella Moy
* Brad Morrison (Dinosaur) as DC Nick Nicholl
* Sam Hoare (The Capture) as ACC Cassian Pewe

Clare Calbraith also returns as Grace's estranged wife Sandy, while Robert Glenister guest stars.

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Sean Marland

Sean is a Senior Feature writer for TV Times, What's On TV and TV & Satellite Week, who also writes for whattowatch.com. He's been covering the world of TV for over 15 years and in that time he's been lucky enough to interview stars like Ian McKellen, Tom Hardy and Kate Winslet. His favourite shows are I'm Alan Partridge, The Wire, People Just Do Nothing and Succession and in his spare time he enjoys drinking tea, doing crosswords and watching football.