Case file · Series 14, Episode 5 · Season 14, Episode 5

The Sleeper Under the Hill

A farmer's body at an ancient stone circle appears to confirm the worst suspicions about a local Druid group.

The 60-second case card

Should I watch this one?

Ritual imagery and an archaeological treasure hunt sit over a case whose strongest manipulation is thoroughly modern.

Best for
Stone circle · Druids · Buried treasure
Mood
Eccentric
Team
DCI John Barnaby with DS 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

Ritual imagery and an archaeological treasure hunt sit over a case whose strongest manipulation is thoroughly modern.

Farmer Alex Preston is found dead at the centre of Crowcall stone circle shortly before the spring equinox. He had planned to plough the meadow, bringing him into open conflict with the New Dawn Druids who regard the site as sacred.

When a member of the Druid group is also killed, Barnaby looks beyond the apparent religious feud. Maps pointing towards Anglo-Saxon treasure, a valuable painting and tensions within the police investigation redirect the case towards people who know how to turn belief into leverage.

  • Stone circle
  • Druids
  • Buried treasure
Break the seal: reveal the finding

Who was the killer in The Sleeper Under the Hill? (spoiler)

The Druid conflict is exploited as camouflage. The maps, treasure and painting reveal a manipulator who has arranged both the crimes and the suspicions surrounding them.

Spoiler-safe viewing companion

Three questions to carry into the episode

Three spoiler-safe questions for your rewatch.

  1. Place

    What does Midsomer Mow conceal?

  2. Theme

    Which details could have more than one meaning?

  3. Teamwork

    Watch DCI John Barnaby and DS 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 14
Episode number
Episode 5
Written by
David Lawrence
Directed by
Nick Laughland
Listed transmission date(s)
21 September 2011
Reported filming period
March–April 2011
Detective
DCI John Barnaby
Partner
DS Ben Jones
Pathologist
Dr Kate Wilding · Tamzin Malleson
Principal setting
Midsomer Mow
Casebook tone
Eccentric

Sources accompany the production credits and filming links.

Fictional settings and real filming places are listed separately. Filming links include 1 mapped area; 2 exact sites.

Credits and archive connections

  • Writer credits5 episodes credited to David Lawrence
  • Director credits9 episodes directed by Nick Laughland
  • Release positionCase 86 of 144
  • Story characterEccentric · Stone circle · Druids
  • Location evidence2 exact screen-use matches
Kate Wilding arrives

Tamzin Malleson makes her first appearance as Dr Kate Wilding, the pathologist who succeeds George Bullard.

A strained partnership

The inquiry deliberately places Barnaby and Jones on opposing interpretations before the evidence brings them back together.

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 Sleeper Under the Hill 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 Kate Wilding

Credit
Resident pathologist
Played by
Tamzin Malleson
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Spoiler-controlled deaths

Deaths recorded in this case

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

Break the seal: reveal the list of deaths
  1. Alex Preston

    Murder · Blunt force

    Performer check
  2. Leticia Clifford

    Murder · Stabbing or impalement

    Performer check
  3. Sgt. Trevor Gibson

    Murder · Drowning

    Performer check
Break a second seal: reveal the verified killer
Series 14 · episode 5 · checked 15 September 2026

Who was the killer in The Sleeper Under the Hill? (spoiler)

Caradoc Singer · Sgt. Trevor Gibson

Singer manipulated Gibson into killing Alex Preston and Leticia Clifford and staging both deaths to implicate the Druids while they concealed the Saxon treasure. Singer then killed Gibson when he tried to flee; Singer's instigation and Gibson's physical killings remain distinct.

Verified motive

Singer's compulsion to possess the Gorse Meadow Saxon treasure drove the scheme: Alex wanted to report the find lawfully and Leticia's investigation threatened its concealment. Singer used Gibson to remove them and frame the Druids, then killed Gibson when his accomplice tried to flee and could expose the collection and murders.

Verified important clue

Archive case 86 · checked 16 September 2026The hidden room containing Singer's art collection

The different room visible in Singer's own recorded tour reveals a concealed gallery of valuable works and exposes his supposed poverty as a cover; the collection supplies the ownership obsession behind his pursuit of the Saxon treasure and his manipulation of Gibson, while the staged Awen brooch keeps their roles distinct.

Verified decisive clue

Archive case 86 · checked 17 September 2026The hidden room containing Singer's art collection

The different room visible in Singer's recorded tour reveals a concealed gallery of valuable works and exposes his supposed poverty as a cover. The collection explains his obsession with the Saxon treasure and manipulation of Gibson, preserving Singer as instigator, Gibson as the first two murders' physical killer and Singer as Gibson's killer.

Verified death and discovery order

Archive case 86 · checked 16 September 2026
  1. discovery
    The Saxon treasure is found

    The Gorse Meadow find creates Singer's determination to possess the treasure and Alex Preston's intention to report it lawfully.

  2. death
    Alex Preston is killed

    Singer manipulates Sgt. Gibson into killing Alex before the farmer can report the find and disrupt its concealment.

  3. discovery
    The Druids are framed

    Ritual staging at the stone circle directs suspicion towards the New Dawn group and away from the treasure scheme.

  4. death
    Leticia Clifford is killed

    Gibson kills Leticia under Singer's direction when her investigation threatens to expose the hidden collection.

  5. discovery
    Gibson tries to flee

    The physical killer attempts to leave as the maps, painting and treasure begin to reveal Singer's manipulation.

  6. death
    Singer kills Gibson

    Singer removes his accomplice before he can expose the scheme, distinguishing Singer's instigation and final killing from Gibson's two murders.

Search the complete deaths index →

Real place → fictional identity

Where was The Sleeper Under the Hill filmed?

The stone church of St Laurence in Warborough
Warborough, Oxfordshire

Village house

Used as: A private house represents Caradoc Singer's home.

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

Village building

Used as: The building is dressed as Midsomer Mow Police Station.

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