Fictional location file · 1 case

Blacktrees-on-Marsh

Blacktrees-on-Marsh is a fictional Midsomer village.

The fictional village of Blacktrees-on-Marsh appears in 1 Midsomer Murders case, in The Blacktrees Prophecy. Its screen identity sits among eccentric stories. Explore the linked episodes below to follow the village through the series.

AI-generated illustration · fictional setting, not a photograph.

Is Midsomer a real place? Explore the fictional county and real filming villages →

Episode recordCasebook interpretationVerified filming linkOriginal fan art

Casebook interpretation

Welcome to Blacktrees-on-Marsh

Blacktrees-on-Marsh is shaped by one linked case. Its stories lean toward eccentric.

Editorial interpretation Fictional setting; real filming places appear below.

What the Casebook has on file

At a glance

These details describe the fictional setting seen on screen.

Cases: 1
On-screen years: 2024
Barnaby era: John Barnaby
Detective: DCI John Barnaby
Investigating partner: DS Jamie Winter
Casebook tone: Eccentric

Stories set here

Cases connected to Blacktrees-on-Marsh

Spoiler-light summaries, with a direct route into each complete episode file.

Series 23, Episode 1 · 2024

The Blacktrees Prophecy

Read the linked case for its spoiler-light premise.

Doomsday preppers
Village prophecy
Bunker

A prepper community built to survive global catastrophe proves much less prepared for mistrust inside its own village.Read the episode guide →

Institutions & village life

Places and village life

No named institution in the linked cases.

No named institutions appear in this village’s linked case summaries.

Curated story character

Themes associated with this setting

Four distinctive ingredients are shown here. Open the case files for all recorded themes.

Original fan art of sealed letters and evidence in a dark study — Crime & secretsDoomsday preppersAI-generated illustration · original fan art

Original fan art of a moonlit stone circle, manor and strange light — Folklore & the uncannyVillage prophecyAI-generated illustration · original fan art

Fan calculation · not canon

Village survival card

Case-file danger: ●○○○○
Documented cases: 1
Most suspicious pastime: Doomsday preppers
Best precaution: Decline the invitation politely

A playful score from case counts and recorded themes. It is not a population or canonical crime-rate statistic.

Fiction versus filming

Real places connected to these cases

Broader filming areas; individual scenes may use different sites.

Real-location research remains open.

No broader filming location is linked to these cases.