Case file · Series 9, Episode 1 · Season 9, Episode 1

The House in the Woods

A house-hunting couple are found dead beside an isolated cottage, and an unexpected local constable becomes Barnaby's new partner.

The 60-second case card

Should I watch this one?

Jason Hughes arrives as Ben Jones in a property mystery whose apparently derelict house has been sold far too many times.

Best for
A later Tom Barnaby starting point and property-centred intrigue.
Mood
Atmospheric property mystery
Team
DCI Tom Barnaby with DC Ben Jones
Spoiler guidance
Read the premise freely; open the marked sections only after watching. Check the linked provider advisory for further viewing information.

Why it matters

Jason Hughes arrives as Ben Jones in a property mystery whose apparently derelict house has been sold far too many times.

A house-hunting story provides an easy way into this case: desirable property, an unsettling building and people whose hopes collide around it. The arrival of Ben Jones also makes it a useful fresh start within the Tom Barnaby years. You can meet a new working partnership while following a self-contained investigation, without first learning the history of every previous assistant.

Watch for

Treat the house as something different people want, fear or can profit from. That is more useful than assuming an ominous appearance explains the crime.

Before you choose

The setting invites ghost-story expectations, but approach it as a detective mystery. Long-running character history is optional here.

Casebook editorial interpretation. Distributor synopsis · house-hunting premise ↗

Peter and Caroline Cave view a tumbledown cottage in secluded woodland and are found dead in their car the next morning. With no regular sergeant at his side, Barnaby recruits local PC Ben Jones into an inquiry involving estate agents, developers and neighbours who all know more about the property than they admit.

Repeated sales and an earlier armed robbery supply the hidden history of the house. Jones's local knowledge proves useful immediately, beginning the partnership that will carry through the rest of Tom Barnaby's tenure.

  • Ben Jones arrives
  • Property fraud
  • Old robbery
Break the seal: reveal the finding

Who was the killer in The House in the Woods? (spoiler)

The cottage is tied to proceeds from a long-ago robbery and to repeated deception in the property chain. Barnaby and Jones identify who needs the house's history—and what remains hidden there—to stay buried.

Spoiler-safe viewing companion

Three questions to carry into the episode

Three spoiler-safe questions for your rewatch.

  1. Place

    What does Midsomer Newton conceal?

  2. Theme

    Which details could have more than one meaning?

  3. Teamwork

    Watch DCI Tom Barnaby and DC Ben Jones: who notices what?

Browse all 100 observation cards →
More episode detailsProduction, cast, deaths and filming information

Credits, context and checked facts

Production and cast

TV series
Series 9
Episode number
Episode 1
Written by
Barry Simner
Directed by
Peter Smith
Listed transmission date(s)
9 October 2005
Reported filming period
May–June 2005
Detective
DCI Tom Barnaby
Partner
DC Ben Jones
Pathologist
Dr George Bullard · Barry Jackson
Principal setting
Midsomer Newton
Casebook tone
Landmark

Sources accompany the production credits and filming links.

Fictional settings and real filming places are listed separately. Filming links include 4 mapped areas; 5 exact sites.

Credits and archive connections

  • Writer credits1 episode credited to Barry Simner
  • Director credits22 episodes directed by Peter Smith
  • Release positionCase 44 of 144
  • Story characterLandmark · Ben Jones arrives · Property fraud
  • Location evidence5 exact screen-use matches
Ben Jones arrives

This is Jason Hughes's first appearance as Ben Jones, initially a uniformed constable assisting the inquiry.

Midsomer Newton pub

The Six Bells at Warborough represents the village local; nearby streets and houses create much of Midsomer Newton.

Credits follow the linked chronology. Dates can differ between territories. Consult original credits for story, teleplay and adaptation wording. External synopses may contain spoilers.

Selected episode credits

The House in the Woods cast

These selected cast entries link to their published profiles. They do not include every name shown in the end credits.

The performers behind this case

Core cast

Follow the cast links for full actor and character guides.

Image credits identify the licence used. No programme publicity stills are reproduced.

Forensic team

Dr George Bullard

Credit
Resident pathologist
Played by
Barry Jackson
Meet the Casebook pathologists →

Spoiler-controlled deaths

Deaths recorded in this case

4 people die in this case, according to the linked death record.

Break the seal: reveal the list of deaths
  1. Peter Cave

    Murder · Other recorded death

    Performer check
  2. Caroline Cave

    Murder · Other recorded death

    Performer check
  3. Harriet Davis

    Murder · Other recorded death

    Performer check
  4. PC Colin Armstrong

    Accidental, natural or other · Gunshot · historical or before the main case

    Performer check
    • PC Colin Armstrong: not listed in the current published cast recordNo PC Colin Armstrong performer appears in the current published cast record. A generic Police Constable credit is not treated as the same character without supporting evidence.
Break a second seal: reveal the verified killer
Series 9 · episode 1 · checked 15 September 2026

Who was the killer in The House in the Woods? (spoiler)

Charlie Magwood

Charlie killed PC Colin Armstrong years earlier, leaving his identical twin Jack to serve the sentence. After Jack escaped, Charlie killed Peter and Caroline Cave and tried to frame him, then killed Harriet Davis when she attempted to cheat him. Jack's concealment of the old weapon is kept separate from Charlie's four murders.

Verified motive

The episode does not establish a separate reliable motive for Charlie's original killing of Colin Armstrong. In the present day he killed the Caves to frame escaped twin Jack and clear Winyard for sale, then killed Harriet when she tried to cheat him of the proceeds.

Verified important clue

Archive case 44 · checked 16 September 2026The twins' fingerprints in different places on the old gun

Charlie's prints are on the trigger while Jack's are only on the barrel, proving which twin fired the shot that killed PC Armstrong and exposing the old conviction that Charlie later exploited to frame Jack for the present murders.

Verified decisive clue

Archive case 44 · checked 17 September 2026The twins' fingerprints in different places on the old gun

Charlie's prints are on the trigger while Jack's are confined to the barrel, proving which identical twin fired the shot that killed PC Armstrong. The distinction breaks Charlie's present-day attempt to frame Jack for the Caves and Harriet and keeps Jack's concealment of the weapon separate.

Verified death and discovery order

Archive case 44 · checked 16 September 2026
  1. death
    PC Colin Armstrong is shot years earlier

    Charlie kills Armstrong during the Hatton Garden robbery, while his identical twin Jack is convicted and serves the sentence.

  2. death
    Peter and Caroline Cave are killed

    After Jack escapes, Charlie garrottes the house-hunting couple and tries to make the deaths look like Jack's work.

  3. discovery
    Winyard points towards the escaped twin

    The house's ownership, Jack's escape and the old robbery initially make the wrong brother appear responsible.

  4. death
    Harriet Davis is killed

    Charlie kills the estate agent when she tries to cheat him of the proceeds from Winyard's sale.

  5. discovery
    The old gun distinguishes the twins

    Prints on the hidden weapon show Charlie used the trigger while Jack handled and concealed the gun.

  6. discovery
    Jack is cleared of the killings

    The resolution attributes Armstrong, the Caves and Harriet to Charlie while retaining Jack's concealment as a separate act.

Search the complete deaths index →

Real place → fictional identity

Where was The House in the Woods filmed?

Lewknor, Oxfordshire

Lewknor Primary School

Used as: The school appears as the local school in Midsomer Newton.

The red-brick Thame Town Hall and clock tower
Thame, Oxfordshire

High Street shopfront

Used as: The shop becomes Harriet Davis Estate Agents.

Representative photograph of the real filming location; the exact camera angle or building may differ.
Open the Thame location file →
The stone church of St Laurence in Warborough
Warborough, Oxfordshire

Village houses

Used as: Neighbouring houses represent Grace Woodhall's home and Gerry Moore's development.

Representative photograph of the real filming location; the exact camera angle or building may differ.
Open the Warborough location file →

Sources accompany the identified filming places.

Wider filming areas

Places connected to this file