'The Madame Blanc Mysteries' Trailer Warms Up for Season 4

Christmas comes but once a year; however, when it comes to U.K. Christmas specials of fan-favorite series, it seems any time of year will do. For example, with the running exception of Call the Midwife, PBS has never aired any of the Christmas episodes from their imported and co-produced series in December that couldn't be tacked on to a full season and turned into a Very Special Finale Episode, or in rare cases — such as Grantchester Season 3 — a very special season premiere. However, in nearly all cases, those specials air within a reasonable waiting period; February or March, or occasionally ahead of the holidays in October, such as with Ghost Stories.

Until 2025, other networks and streamers, such as Netflix, AMC+, and BritBox, had all followed the example set by public broadcasting, as it had been America's leading importer of British cultural series for half a century. However, Acorn TV has decided to finally go its own way, breaking with tradition and airing The Madame Blanc Mysteries 2024 Christmas special a full six months after it aired in the U.K., arriving as part of the show's premiere in the heat of July.

Considering the fictional Southern French coastal town of Saint Victoire isn't exactly snowbound, holding the winter holiday episode for warmer times probably won't feel that odd. And perhaps it will work in Acorn TV's favor. After all, Death in Paradise is a hit on BritBox in January because people want to watch beach scenes when it's freezing outside. Perhaps a Christmas treat at the height of summer will be just what Jean White needs.

Here is the overall synopsis for the fourth season.

The fourth season of The Madame Blanc Mysteries returns to the wonderful world of Sainte Victoire, packed with unusual antiques and objéts d’art, murder, mystery, sunshine, and laughter. Jean White is navigating a fledgling romance with her sidekick, Dom Hayes. Get ready for a brand-new season packed with sun-drenched murder mysteries, a budding romance, and… two 75-year-old hotties on jet skis!

Here are the individual episode descriptions for Season 4.

Episode 1 + 2: “Christmas” + “Beach Club”  (Monday, July 7, 2025)

• Jean and Dom investigate when a puppeteer is murdered after a Christmas Eve performance at a Sainte Victoire market. Meanwhile, Judith receives a card from a former bridesmaid that contains a disturbing truth about her marriage.
• When Jeremy and Judith discover the body of a missing CEO inside a dingy with two rare coins placed over his eyes, Caron asks Jean for help in identifying the coin's history. Meanwhile, Patrick looks into some suspiciously expensive wine payments.

Episode 3: “Inheritance” (July 14)

• When Charlie's aunt Fifi is mysteriously murdered after an intruder breaks into the shop, Jean tries to find the killer. Charlie is set to inherit Fifi's estate, but a secret about her half-sister could change everything.

Episode 4: “Bad Education” (July 21)

• A masked thief attacks the night watchman at the Sainte Victoire library and tries to steal a rare bronze statue donated by the Louvre, damaging the antique in the process. With the library's reputation at risk, Jean investigates.

Episode 5: “The Blueprint” (July 28)

• Jean and Dom travel to Malta to help a couple, Margot and Bobby, authenticate a copy of the blueprints for the capital city, Valletta. But when Margot is attacked, Jean suspects the pair have the original blueprints and are being targeted.

Episode 6: “Antique Antics” (August 4)

• When a touring television show “Antique Antics” visits Judith and Jeremy’s summer home, its presenter is killed during filming. Accused of the crime, Jean’s friend David asks for her help to prove his innocence.

Episode 7: “Where Eagles Dare” (August 11)

• When local man Jovan is attacked after trying to sell a rare trinket, Jean looks for the perpetrator while trying to resolve her failing relationship with Dom. Otto, a regular at the bar, retaliates against Patrick.

Series creator Sally Lindsay (Cold Call) will once again lead the series as the titular Jean White, aka "Madame Blanc," with Steve Edge (Murder They Hope) as her love interest/boyfriend, Dom Hayes, and Tony Robinson (Black Adder) as Dom’s Uncle Patrick. Co-writer Sue Vincent (Shameless) also returns as mechanic Gloria Beaushaw with Paul Chuckle (Elliott) as her dad, Trevor Beaushaw. The ensemble is rounded out by Robin Askwith (Strike) and Sue Holderness (Only Fools and Horses) as hoteliers Jeremy and Judith Lloyd James, and Alex Gaumond (Derry Girls) as Chief of Police André Caron. 

Guest stars for Season 4 include Danny Hatchard (Ridley Road), Graeme Hawley (Ridley), Edward MacLiam (Endeavour), Samantha Power (Ackley Bridge), Charlie Condou (Unforgotten), Lorraine Burroughs (Sweetpea), and Richard Blackwood (Typical).

As always, Lindsay and Vincent co-wrote all seven episodes, with director Dermot Boyd helming all installments, which Jake Rollins produced.  Lindsay and Caroline Roberts-Cherry serve as executive producers for Saffron Cherry, with Mike Benson and Andy Morgan for Clapperboard.

The Madame Blanc Mysteries Season 4 will premiere with two episodes (including the long-delayed 2024 Christmas Special) on Acorn TV starting Monday, July 7, 2025, and stream with one episode a week on Mondays through mid-August.