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 story interpretation · not a canonical view or real 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 The village is fictional; real places linked to its stories are listed below when known.

What the Casebook has on file

At a glance

The details below describe the village as it appears in the programme; Midsomer is a fictional county.

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

A false missile warning sends a survivalist into his bunker, where the apocalypse fails to arrive but murder does.

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 separate pub, school, church, club or business is named in the linked case information.

Curated story character

Themes associated with this setting

Four distinctive ingredients are shown here. Linked case files retain the complete theme record without overwhelming the village portrait.

Original fan art of sealed letters and evidence in a dark study — Crime & secretsDoomsday preppersOriginal AI-generated fan art · editorial grouping

Original fan art of a moonlit stone circle, manor and strange light — Folklore & the uncannyVillage prophecyOriginal AI-generated fan art · editorial grouping

Fan calculation · not canon

Village survival card

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

This playful score uses only the number of linked cases and breadth of recorded themes. It is not a population or canonical crime-rate statistic.

Fiction versus filming

Real places connected to these cases

These are broader verified filming areas attached to the episode files—not proof that one real village represents the whole fictional setting.

Real-location research remains open.

No broader filming location is linked to these cases.