‘The Marlow Murder Club’ Trailer Has Eyes on New Cases
The three musketeers of crime-solving are back in the first trailer for 'The Marlow Murder Club' Season 3.
The 250th anniversary of American Independence has driven nearly all the British debuts off PBS for July, but that just means Masterpiece is pushing us to look ahead to when shows return in September and beyond. One of the best-known PBS brands, it has good reason to be highlighting its autumn debuts, as the back half of 2026 is packed with returning favorites, including the third and final Susan Ryeland mystery, Marble Hall Murders, and the out-of-the-box hit The Marlow Murder Club, the latter of which has debuted its first trailer for Season 3.
Based on Robert Thorogood’s novels, the ensemble murder mystery series has proved as popular as the murder mystery franchise that made Thorogood a major figure at the BBC: his fish-out-of-water detective series, Death in Paradise. Unlike his other hit, The Marlow Murder Club hasn’t been running long enough to spawn multiple spinoffs like the Paradise franchise, but give it time. (It’s already renewed for Season 4!)
The longer the series manages to be one of PBS’s most dependable hits, the more likely it is that someone in the cast will find themselves relocating with an entire spinoff series to call their own. I’m not saying we need an Australian version or anything as extreme as Return to Paradise. I’m just sayin, I wouldn’t hate turning on PBS in 2029 and discovering there are now three shows set within this universe.
Here’s the synopsis for Season 3:
Now an established part of newly promoted DI Tanika Malik’s crime-solving gang, retired archaeologist Judith Potts, dog walker Suzie Harris, and vicar’s wife Becks Starling are back, bringing their unconventional methods to bear on a string of high-profile murders.
From the sudden death of the town’s beloved mayor - the nicest man in Marlow - to a celebrity chef found dead at the launch of his cookbook with half the town in attendance, the team will be working under the watchful eye of the Marlow community. They’ll also be called to action at a university reunion in an eerie manor house, where, in a surprising twist, Becks finds herself amongst the suspects. Could this case threaten our amateur sleuths’ roles as civilian advisors?
Jo Martin, Cara Horgan, and Samantha Bond in 'The Marlow Murder Club' Season 3 (Masterpiece)
Samantha Bond (Downton Abbey), Jo Martin (Doctor Who), and Cara Horgan (Murder in Provence) star alongside Natalie Dew (The Capture), Holli Dempsey (Endeavour), Phill Langhorne (Mrs. Sidhu Investigates), Tijan Sarr (Shadow & Bone), and Season 2 returning guest star Hugh Quarshie (MaryLand).
Guest stars for Season 3 include Peter Davison (The Gold), Jacqueline Boatswain (After the Flood), Nigel Harman (We Hunt Together), Sarah Alexander (Art Detectives), Tony Gardner (Last Tango in Halifax), Jason Merrells (Happy Valley), Harry Enfield (Bad Education), Cherie Lunghi (Lewis), Adrian Lukis (SAS Rogue Heroes), and Alastair Mackenzie (The Crown).
Series creator Thorogood co-wrote Season 3’s first two episodes with Daniel Rusteau, an adaptation of Robert’s third book in The Marlow Murder Club series, Queen of Poisons. Other writers for the series include Amy Reith and Julia Gilbert. Director Steve Barron returns to split helming duties with Katherine Churcher and Serena Cullen producing. Thorogood and Barron executive produce alongside Alison Owen, Debra Hayward, Alison Carpenter, Sophie Clarke-Jervoise & Jill Forbes for Monumental Television, and Susanne Simpson for Masterpiece.
The Marlow Murder Club Season 3 premieres on most local PBS stations, the PBS app, and the PBS Masterpiece Prime Video Channel beginning Sunday, September 6, 2026, at 8 p.m. ET, directly preceding the premiere of Marble Hall Murders at 9 p.m. All six episodes of Season 3 will be available for members on premiere day via PBS Passport. As always, check your local listings.
The Marlow Murder Club Seasons 1 and 2 are available to stream for members on PBS Passport and on the PBS Masterpiece Prime Video Channel.
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