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Best British Mystery Shows: 25 to Watch in 2026

From the Belfast streets of Blue Lights to the Thames-side puzzles of The Marlow Murder Club, these are the British mystery and detective series with a new season currently airing, confirmed, or on the way in 2026 — not the beloved classics that have already wrapped up. Explore where to stream each one in the US.

Explore the List →
Jump to Modern Procedurals Coastal & Island Cozy Village Mysteries Detective Dramas Literary Mysteries Streaming Guide FAQ

Curated and verified by British TV Hub · Streaming and renewal status checked September 2026

Why These 25?

Looking for a broader starting point, including the classics? Try British TV Hub's guides to Best British Police Procedurals or Cozy British Mysteries instead. This list is different — every show here is currently airing, has an officially confirmed next season, or has been renewed, so it's built for finding your next watch in 2026 rather than revisiting a finished favourite.

Modern Police Procedurals

Fast-moving, character-driven crime dramas set in the present day, with new seasons currently airing, filming, or confirmed.

Returning 2027

Line of Duty

2012–present · BBC · BritBox

AC-12, an anti-corruption unit, investigates bent coppers from within the force, in one of the most compulsive crime dramas Britain has ever made. Series 7 has already wrapped filming and reunites Vicky McClure, Martin Compston, and Adrian Dunbar in a new post-AC-12 unit.

ThrillerBelfast-filmedNew series filmedBritBox
At a glance
Years2012–present
Best ForTwisty, binge-worthy thrillers
ToneTense, compulsive
PaceFast-moving
Similar ShowsBlue Lights, Sherwood
Available OnBritBox
Watch on BritBox → Own Season One → Full Show Guide →
New Season 2026

Blue Lights

2023–present · BBC · BritBox

Blue Lights follows a group of rookie police officers navigating their first year on the beat in present-day Belfast, and has grown into one of the most acclaimed dramas on British TV, winning the BAFTA for Best Drama Series in 2025. Series 4 is expected on BBC One and BritBox in autumn 2026.

BelfastBAFTA-winningBritBox
At a glance
Years2023–present
Best ForFresh, character-driven policing
ToneTense, humane
PaceFast-moving
Similar ShowsLine of Duty, Sherwood
Available OnBritBox
Watch on BritBox → Own Season One → Full Show Guide →
New Season 2026

Trigger Point

2022–present · ITV · BritBox

Vicky McClure stars as bomb disposal officer Lana Washington in this high-tension thriller from Line of Duty creator Jed Mercurio. Series 4 was filmed back in 2025 and is expected on ITV and BritBox later in 2026.

ThrillerVicky McClureBritBox
At a glance
Years2022–present
Best ForEdge-of-your-seat tension
ToneHigh-stakes, urgent
PaceFast-moving
Similar ShowsLine of Duty, Sherwood
Available OnBritBox
Watch on BritBox → Own Season One → Full Show Guide →
Returning 2026

Sherwood

2022–present · BBC · BritBox

A present-day murder in a former Nottinghamshire mining village reopens decades-old wounds from the 1984 miners' strike, in this acclaimed ensemble crime drama. Series 3 is confirmed and began filming in January 2026.

Crime dramaEnsemble castBritBox
At a glance
Years2022–present
Best ForSlow-burn crime with real depth
ToneSomber, layered
PaceSlow burn
Similar ShowsUnforgotten, Broadchurch
Available OnBritBox
Watch on BritBox → Own Season One → Full Show Guide →
Series 30 Confirmed

Silent Witness

1996–present · BBC · BritBox

Britain's longest-running forensic pathology drama follows the Lyell Centre team as they uncover the truth behind the country's most complex deaths. Series 30 — a milestone season — is confirmed and currently in production.

Forensic dramaLong-runningBritBox
At a glance
Years1996–present
Best ForCase-of-the-week procedurals
ToneClinical, gripping
PaceModerate
Similar ShowsGrace, Professor T
Available OnBritBox
Watch on BritBox → Own Season One → Full Show Guide →

Coastal & Island Mysteries

Detectives working remote islands and sun-soaked coastlines, where the scenery is as much a draw as the whodunit.

New Season 2026

Shetland

2013–present · BBC · BritBox

Detectives police the windswept Shetland Islands, where the landscape is as dramatic as the crimes they investigate. Series 11 is confirmed, with production underway for a late-2026 premiere.

Scottish IslesAtmosphericBritBox
At a glance
Years2013–present
Best ForNewcomers to British crime drama
ToneMoody, atmospheric
PaceModerate
Similar ShowsVera, Hinterland
Available OnBritBox
Watch on BritBox → Own Season One → Full Show Guide →
Season 16 Greenlit

Death in Paradise

2011–present · BBC · BritBox

A fish-out-of-water British detective solves impossible locked-room murders on the fictional Caribbean island of Saint Marie. Season 16 has been greenlit, with the BBC confirming the show will run through at least Season 17 in 2028.

CaribbeanLocked-room mysteriesLong-runningBritBox
At a glance
Years2011–present
Best ForLight, sunny whodunits
ToneWarm, comic
PaceBreezy
Similar ShowsBeyond Paradise, Return to Paradise
Available OnBritBox
Watch on BritBox → Own Season One → Full Show Guide →
Filming Season 5

Beyond Paradise

2023–present · BBC · BritBox

The Death in Paradise spin-off follows DI Humphrey Goodman as he swaps Saint Marie for a quiet Devon coastal town, only to find that murder follows him there too. Series 5 is now filming in Devon.

Death in Paradise universeDevonBritBox
At a glance
Years2023–present
Best ForCozy detective comedy
ToneGentle, warm
PaceBreezy
Similar ShowsDeath in Paradise, Return to Paradise
Available OnBritBox
Watch on BritBox → Own Season One → Full Show Guide →
Renewed

Signora Volpe

2022–present · Acorn TV / BBC America · Acorn TV

A retired MI6 officer settles into a quiet life in the Umbrian countryside, only to keep stumbling into murder. Season 3 has been renewed and was filmed on location in Lazio and Umbria.

Italy-setAcorn TV OriginalAcorn TV
At a glance
Years2022–present
Best ForSun-drenched mystery
ToneWarm, wry
PaceModerate
Similar ShowsDeath in Paradise, The Chelsea Detective
Available OnAcorn TV
Watch on Acorn TV → Own Season One → Full Show Guide →
Airing Now

Return to Paradise

2025–present · BBC · BritBox

A Death in Paradise spin-off set on the sun-soaked Australian coast, following a detective who returns home after a career-ending scandal in London. Season 2 is currently airing on BritBox, with Season 3 already in development.

Death in Paradise universeAustralia-setBritBox
At a glance
Years2025–present
Best ForFans of the Death in Paradise formula
ToneWarm, breezy
PaceBreezy
Similar ShowsDeath in Paradise, Beyond Paradise
Available OnBritBox
Watch on BritBox → Own Season One → Full Show Guide →

Cozy Village Mysteries

Gentle, comforting whodunits set in picturesque English villages — murder rates implausibly high, stakes reassuringly low.

Season 26 Filming

Midsomer Murders

1997–present · ITV · Acorn TV

Impossibly picturesque English villages hide an impossibly high murder rate in Britain's longest-running village mystery. Season 26 is officially in production, with no premiere date set yet.

Village mysteryLong-runningAcorn TV
At a glance
Years1997–present
Best ForComfort-watch whodunits
ToneCozy, eccentric
PaceModerate
Similar ShowsFather Brown, Death Valley
Available OnAcorn TV
Watch on Acorn TV → Own Season One → Full Show Guide →
Renewed Through S15

Father Brown

2013–present · BBC · BritBox

Mark Williams stars as the crime-solving Kembleford priest in one of Britain's most-watched daytime dramas. The show has been renewed for two more seasons, with filming on Season 14 already underway.

Cozy mysteryDaytime dramaBritBox
At a glance
Years2013–present
Best ForGentle, episodic mysteries
ToneWarm, whimsical
PaceBreezy
Similar ShowsMidsomer Murders, Sister Boniface Mysteries
Available OnBritBox
Watch on BritBox → Own Season One → Full Show Guide →
Season 2: Nov 17, 2026

Death Valley

2023–present · BBC · BritBox

An aging Welsh TV detective and a young real-life detective sergeant team up to solve crimes in the Brecon Beacons, blending genuine comedy with genuine mystery. Season 2 arrives on BritBox November 17, 2026.

Comedy-mysteryWales-setBritBox
At a glance
Years2023–present
Best ForMystery fans who want to laugh too
ToneFunny, warm
PaceBreezy
Similar ShowsLudwig, Death in Paradise
Available OnBritBox (Season 1 streaming now; Season 2 arrives Nov 17, 2026)
Watch on BritBox → Own Season One → Full Show Guide →
New Season Sept 2026

The Marlow Murder Club

2024–present · U&Drama / PBS Masterpiece · PBS Masterpiece

Three unlikely amateur sleuths in the Thames-side town of Marlow team up to solve murders in this adaptation of Robert Thorogood's novels. Season 3 premieres September 6, 2026 on PBS Masterpiece, with Season 4 already renewed.

Cozy mysteryAmateur detectivesPBS Masterpiece
At a glance
Years2024–present
Best ForGentle, puzzle-driven whodunits
ToneWarm, clever
PaceModerate
Similar ShowsMidsomer Murders, Death Valley
Available OnPBS / PBS Passport / PBS Masterpiece Amazon Channel
Where to Watch → Own Season One → Full Show Guide →
Renewed

Art Detectives

2025–present · U&Drama · Acorn TV

A specialist police unit investigates crimes involving stolen and forged art and antiques across Britain. Season 2 has been confirmed, debuting with a Christmas special in December 2026.

Art crimeAcorn TV OriginalAcorn TV
At a glance
Years2025–present
Best ForA fresh angle on the procedural formula
ToneLight, curious
PaceModerate
Similar ShowsThe Chelsea Detective, Grace
Available OnAcorn TV
Watch on Acorn TV → Own Season One → Full Show Guide →

Detective Dramas Returning

Character-driven detective series, from literary adaptations to comic reinventions of the genre, all with new seasons on the way.

Returning 2027

Dalgliesh

2021–present · Acorn TV · Acorn TV

Bertie Carvel plays P.D. James's brooding detective-poet Adam Dalgliesh in this atmospheric run of adaptations. Season 4 has been greenlit for 2027 and will include the series' first fully original, non-novel story.

Literary adaptationAtmosphericAcorn TV
At a glance
Years2021–present
Best ForSlow-burn, character-driven mystery
ToneBrooding, literary
PaceSlow burn
Similar ShowsUnforgotten, Grace
Available OnAcorn TV
Watch on Acorn TV → Own Season One → Full Show Guide →
Renewed

Lynley

2025–present · BritBox Original · BritBox

A fresh adaptation of Elizabeth George's Inspector Lynley novels, pairing the aristocratic detective with working-class DS Barbara Havers. Season 2 has been renewed with an expanded eight-episode run, currently filming in Dublin.

BritBox OriginalRebootBritBox
At a glance
Years2025–present
Best ForClass-clash detective partnerships
ToneSharp, character-driven
PaceModerate
Similar ShowsDalgliesh, Grace
Available OnBritBox
Watch on BritBox → Own Season One → Full Show Guide →
New Season Oct 2026

Ludwig

2024–present · BBC · BritBox

David Mitchell plays a reclusive puzzle-setter who impersonates his missing twin brother, a police detective, and turns out to be surprisingly good at solving crimes. Season 2 premieres October 13, 2026 in the US, with Season 3 already renewed.

Comedy-mysteryDavid MitchellBritBox
At a glance
Years2024–present
Best ForA clever, funny change of pace
ToneWitty, puzzle-driven
PaceModerate
Similar ShowsDeath Valley, Bookish
Available OnBritBox
Watch on BritBox → Own Season One → Full Show Guide →
Season 4 Airing Now

The Chelsea Detective

2022–present · Acorn TV / ZDF · Acorn TV

DI Max Arnold investigates crimes among London's wealthy Chelsea set while living modestly on a houseboat and working through his own complicated marriage. Season 4 is currently airing on Acorn TV.

LondonCharacter-drivenAcorn TV
At a glance
Years2022–present
Best ForSlow-burn London mystery
ToneDry, understated
PaceModerate
Similar ShowsSignora Volpe, Grace
Available OnAcorn TV
Watch on Acorn TV → Own Season One → Full Show Guide →
Season 6 In Development

Professor T

2021–present · ITV / PBS · PBS Masterpiece

A brilliant but socially awkward criminology professor assists Cambridge police investigations, drawing on his own idiosyncratic methods and personal history. Season 6 is already in development after Season 5 wrapped on PBS.

CambridgeCharacter-drivenPBS Masterpiece
At a glance
Years2021–present
Best ForAn unconventional detective lead
ToneQuirky, sharp
PaceModerate
Similar ShowsDalgliesh, Unforgotten
Available OnPBS / PBS Passport / PBS Masterpiece Amazon Channel
Where to Watch → Own Season One → Full Show Guide →

Literary & Page-to-Screen Mysteries

Adaptations of celebrated crime novelists — Anthony Horowitz, Georges Simenon, P.D. James, and more — still bringing new stories to screen.

New Sept 2026

Marble Hall Murders

2026 · BBC / PBS Masterpiece · PBS Masterpiece

The third and final installment of Anthony Horowitz's Susan Ryeland trilogy, following the book editor as she's drawn into another mystery-within-a-mystery involving the Atticus Pünd novels. Premieres September 6, 2026 on PBS Masterpiece.

Literary adaptationFinal installmentPBS Masterpiece
At a glance
Years2026
Best ForPuzzle-box, book-within-a-book mysteries
ToneClever, layered
PaceModerate
Similar ShowsBookish, Magpie Murders
Available OnPBS / PBS Passport / PBS Masterpiece Amazon Channel
Where to Watch → Own Season One → Full Show Guide →
Renewed

Bookish

2025–present · U&Alibi / PBS · PBS Masterpiece

Mark Gatiss stars as a bookshop owner with a knack for solving crimes in postwar London. Season 2 airs in the UK in August 2026, with a US premiere date still to come and a third season already being written.

Postwar LondonMark GatissPBS Masterpiece
At a glance
Years2025–present
Best ForLiterary, character-driven mystery
ToneWarm, witty
PaceModerate
Similar ShowsMarble Hall Murders, Father Brown
Available OnPBS / PBS Passport / PBS Masterpiece Amazon Channel
Where to Watch → Own Season One → Full Show Guide →
New Season Oct 2026

Maigret

2025–present · PBS Masterpiece · PBS Masterpiece

Benjamin Wainwright plays a young, present-day version of Georges Simenon's classic Parisian detective, leading La Crim, the city's serious crime unit. Season 2 premieres October 18, 2026 on PBS Masterpiece.

Paris-setLiterary adaptationPBS Masterpiece
At a glance
Years2025–present
Best ForA modern spin on a classic detective
ToneStylish, moody
PaceModerate
Similar ShowsMarble Hall Murders, Dalgliesh
Available OnPBS / PBS Passport / PBS Masterpiece Amazon Channel
Where to Watch → Own Season One → Full Show Guide →
Filming Season 7

Unforgotten

2015–present · ITV · PBS Masterpiece

Long-buried cold cases surface with devastating consequences for the people connected to them, in one of British TV's most quietly devastating crime dramas. Season 7 is currently filming, though a premiere date hasn't been set.

Cold casesCharacter-drivenPBS Masterpiece
At a glance
Years2015–present
Best ForEmotional cold-case mysteries
ToneQuiet, devastating
PaceSlow burn
Similar ShowsBroadchurch, Sherwood
Available OnPBS / PBS Passport / PBS Masterpiece Amazon Channel
Where to Watch → Own Season One → Full Show Guide →
Renewed

Grace

2021–present · ITV · BritBox

John Simm stars as DS Roy Grace, a Brighton detective balancing police work with an unshakeable belief in the paranormal, based on Peter James's bestselling novels. Series 7 has already been renewed and is expected in 2027.

BrightonLiterary adaptationBritBox
At a glance
Years2021–present
Best ForProcedural mystery with a supernatural edge
ToneGrounded, atmospheric
PaceModerate
Similar ShowsDalgliesh, Lynley
Available OnBritBox
Watch on BritBox → Own Season One → Full Show Guide →

Where to Stream in the US

Nearly every show on this page lives on one of three services.

BritBox Guide
Home to Shetland, Line of Duty, Blue Lights, Trigger Point, and most of the modern procedurals.
Read Guide →
Acorn TV Guide
Home to Midsomer Murders, Dalgliesh, Art Detectives, and other village and Acorn Original mysteries.
Read Guide →
PBS Masterpiece Guide
Home to Unforgotten, Maigret, Marble Hall Murders, Bookish, and other literary mysteries.
Read Guide →
Full Streaming Guide
Every service British TV Hub recommends, all in one place.
Read Guide →

What Readers Ask Most

What are the best British mystery shows to watch in 2026?

Shetland, Line of Duty, and Blue Lights are among the biggest returning crime dramas in 2026, while The Marlow Murder Club, Ludwig, and Marble Hall Murders bring cozier, character-driven mysteries with new seasons this year.

Where can I stream British mystery shows in the US?

Most modern crime dramas stream on BritBox. Cozy village mysteries and several Acorn Originals live on Acorn TV. Literary adaptations including Unforgotten, Maigret, and Marble Hall Murders are on PBS Masterpiece. See the Where to Stream section above for the full breakdown.

What British mystery show should I start with?

Shetland is one of the most accessible starting points — atmospheric and character-driven without being too dark. For something cozier, The Marlow Murder Club or Midsomer Murders are gentle, comforting entry points.

Which of these shows are getting new seasons soonest?

Ludwig Season 2 arrives October 13, 2026, Maigret Season 2 premieres October 18, 2026, and The Marlow Murder Club Season 3 premieres September 6, 2026 alongside Marble Hall Murders — both on PBS Masterpiece.

Is this list only currently-airing shows?

This guide focuses on British mystery and detective series that are currently airing, confirmed for a new season, or actively renewed — rather than beloved classics that have already concluded, like Poirot or Inspector Morse. Looking for those too? See British TV Hub's guide to Best British Police Procedurals.


Explore More

Best British Police Procedurals
The classics and modern favourites, side by side.
Read Guide →
Cozy British Mysteries
Gentle village whodunits for comfort viewing.
Read Guide →
British Detective Partnerships
The mentor/protege and old-cop/young-cop duos.
Read Guide →

Affiliate disclosure: British TV Hub is a participant in the Amazon Associates program and earns from qualifying purchases. Some links on this page may be affiliate links to BritBox, Acorn TV, and PBS Masterpiece. This never affects the recommendations — these are genuine editorial picks.