Mystery lovers are buzzing with excitement for The Marlow Murder Club Season 3, already confirmed and in production. This delightful show, set in the charming town of Marlow, hooks viewers with its clever amateur detectives and twisty crimes. Based on Robert Thorogood’s popular books, it mixes humor, warmth, and suspense. Here’s everything known about Season 3, from when it might air to who’s back and what mysteries are coming.
The Marlow Murder Club Season 3 Release Date Speculation
No exact premiere date is out yet for The Marlow Murder Club Season 3, but early 2026 feels likely. Season 1 launched in March 2024, and Season 2 followed in March 2025 on U&Drama in the UK, with PBS Masterpiece airing it in the US starting August 24, 2025. Following this trend, March 2026 seems a safe bet for the UK, with the US possibly getting it later in 2026. Filming kicked off in May 2025, so the timeline supports an early 2026 release. Stay updated by checking U&Drama’s listings or signing up for PBS Masterpiece’s newsletter.
The Marlow Murder Club Season 3 Expected Cast
The heart of the show—its core cast—is returning. Samantha Bond is back as Judith Potts, the retired archaeologist who cracks cases like crossword puzzles. Jo Martin reprises Suzie Harris, the dog walker with deep local ties. Cara Horgan returns as Becks Starling, the vicar’s wife with a keen eye. Natalie Dew is set to play DI Tanika Malik again, now working officially with the trio as civilian consultants.
Expect familiar faces like Holli Dempsey as DC Alice Hackett, Phill Langhorne as DS Brendan Perry, and Tijan Sarr as DC Jason Kennedy. There’s talk of Hugh Quarshie returning as Professor Gifford, maybe sparking a sweet romance with Judith, which could shake things up. New guest stars for the mysteries haven’t been revealed, but past seasons featured names like Tom Stourton, so expect some exciting additions.
The Marlow Murder Club Season 3 Potential Plot
Season 3 will deliver six hour-long episodes, with three fresh murder cases, each spanning two episodes. The first mystery adapts The Queen of Poisons, the third book by Thorogood, co-written with Daniel Rusteau. The trio—Judith, Suzie, and Becks—will tackle high-stakes crimes in Marlow’s close-knit community. Here’s what’s been hinted at:
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Mayor’s Shocking Death: Marlow’s kind-hearted mayor drops dead, leaving the town stunned and the sleuths digging for answers.
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Chef’s Fatal Launch: A celebrity chef is found dead at his cookbook event, with a crowd of suspects who were all there.
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Reunion Gone Wrong: A university reunion at a creepy manor house turns deadly, and Becks ends up a suspect, putting the trio’s role at risk.
These cases promise the show’s classic blend of clever puzzles, cozy vibes, and heartfelt moments. The group’s unique skills—Judith’s logic, Suzie’s local know-how, and Becks’ empathy—will shine as they solve crimes and grow closer. The manor house setting suggests a spooky twist, while the bigger cases hint at tougher challenges.
