The Madame Blanc Mysteries season 4: release date, cast, plot, trailer and everything we know
The Madame Blanc Mysteries season 4 sees Sally Lindsay's sleuthing antique dealer back for more compelling cases

The Madame Blanc Mysteries season 4 is just around the corner, ready to welcome us back to the charming French town of Sainte Victoire where antiques expert and amateur sleuth Jean White (Sally Lindsay) will be solving a fresh batch of complex cases.
The third season ended with Jean and her best friend, local taxi driver Dom Hayes (Steve Edge) finally admitting their romantic feelings for each other, and in last year's Christmas special, the pair were keeping their relationship a secret from their loved ones for the time being. But how long will they be able to hide the fact that they're more than just friends these days? And what mysteries will eagle-eyed Jean be getting to the bottom of?
Here's everything we know about The Madame Blanc Mysteries season 4...
The Madame Blanc Mysteries season 4 release date
The Madame Blanc Mysteries season 4 launches on Thursday March 20 at 9pm on 5 in the UK. The series will air internationally on Acorn TV at a later date that is yet to be confirmed.
The Madame Blanc Mysteries season 4 cast
Creator and co-writer Sally Lindsay returns as Jean White for season 4, alongside Steve Edge as Dom, co-writer Sue Vincent as glamorous mechanic Gloria Beauchamp, Sue Holderness and Robin Askwith as local chateau owners Judith and Jeremy Lloyd James, Tony Robinson as Dom's Uncle Patrick who runs the local pub, La Couronne, and Alex Gaumond as police chief André Caron.
Other returning cast members for season 4 include Sanchia McCormack as Jean's business partner Charlie Brodeur, Djinda Kane as Charlie's wife Simone, Jacqueline Berces as Caron's colleague Gendarme Richárd, Paul Chuckle as Gloria's father Trevor, Les Dennis as Jean's friend and fellow antique dealer David, and Stephen Bailey as local gangster John Marsden.
Guest cast members in this season include Brassic's Samantha Power, former Coronation Street stars Charlie Condou and Graeme Hawley, Hollyoaks' Richard Blackwood, EastEnders' Danny Hatchard, Sweetpea's Lorraine Burroughs and DCI Banks star Edward MacLiam.
The Madame Blanc Mysteries season 4 episode guide
Episode 1 — "Beach Club": Judith and Jeremy are out jet-skiing when they discover the body of businessman Antoine Lefevre lying in a dinghy, with a plastic bag tied around his head and two rare coins covering his eyes. Caron asks Jean to help him research the coins, which may hold the key to finding the killer. Meanwhile, Patrick is appalled when he discovers how much Judith and Jeremy are being charged by their wine supplier and enlists Dom and Gloria's help in an investigation of his own.
Episode 2 — "Inheritance": Charlie's Aunt Fifi is cleaning after hours at Brodeur & White when a mysterious figure sneaks into the shop and swaps her detergent for a different product. When Fifi unwittingly uses the new product, it reacts violently to the bleach she's been using and releases deadly toxic fumes. Charlie is left devastated by Fifi's death, so Jean investigates to help her friend. Could Fifi's collection of valuable antiques hold a clue to her killer's identity? Meanwhile, Judith and Jeremy find themselves reluctantly dogsitting after Gloria injures herself at La Couronne...
Episode 3 — "Bad Education": When an intruder attempts to steal a small bronze statue of Hathor, the Goddess of Intoxication, from the library, security guard Thomas is left seriously injured and fighting for his life. Jean's determined to find out who hurt her friend, and the trail seems to lead to the local university. Meanwhile, gangster John Marsden returns to Sainte Victoire to call in a favour from Jean — and it's an offer she literally can't refuse...
Episode 4 — "The Blueprint": Jean's delighted when she's contacted by a Maltese couple, Margot and Bobby, who believe they've come into possession of the original blueprints for the city of Valletta. They want Jean to authenticate the plans — which means she and Dom get an all-expenses-paid trip to Malta where they can finally be a couple in public. But when they land, they discover two figures running away from Margot and Bobby's car — and Margo has taken a nasty blow to the head. Meanwhile, back in Sainte Victoire, Gloria's dad Trevor gets into trouble when he borrows Dom's car Madeline, but Judith and Jeremy come to the rescue.
Episode 5 — "Antique Antics": There's great excitement in Sainte Victoire when popular TV show Antique Antics on Tour comes to film in Judith and Jeremy's summer house, Epoustouflant. The producer is an old pal of Jean's from way back, and when most of his crew end up stranded in the UK, she recruits the locals to help out. But the show is hit by scandal when one of its stars, Elaine, is poisoned — and Jean's friend David becomes the prime suspect...
More summaries will be added here each week, so keep checking back!
Is there a trailer for The Madame Blanc Mysteries season 4?
Yes, 5 have released a teaser trailer for the new series on their social media. You can watch it below:
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In the trailer, Jean's voiceover says "My name is Jean White. I occasionally help the police with their enquiries." This is followed by Caron saying "Jean, let's go." A caption on the screen reads "In this charming village..." and this is followed by Judith saying "Huddle in" and poring over a map on a table outside La Couronne with Jeremy, Gloria, Patrick and Trevor. The next caption says "Crime doesn't take a holiday", and we hear Caron saying "we have a murder on our hands" as a security guard lies unconscious on the floor and a gloved figure removes an Egyptian statue from a display case, causing a burglar alarm to go off. We see Jean smashing a window and screaming for help, and Jean and Dom embracing each other in fear. The final caption reads "New series: The Madame Blanc Mysteries".
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Steven Perkins is a Staff Writer for TV & Satellite Week, TV Times, What's On TV and whattowatch.com, who has been writing about TV professionally since 2008. He was previously the TV Editor for Inside Soap before taking up his current role in 2020. He loves everything from gritty dramas to docusoaps about airports and thinks about the Eurovision Song Contest all year round.
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