The BBC has released the first set of promotional photographs for The Last Detectives, a six-part crime drama previously titled Old Town Murders.
The Detective Partnership Set Against Tenby
The newly published images introduce the primary investigative team tackling murder cases along the Pembrokeshire coastline. Mark Lewis-Jones stars as DI Glyn Walsh alongside Steffan Rhodri as DS Sion Dearden, a detective pairing whose professional rapport anchors the narrative.
Welsh locations host six-part series production
Filming for the six-part series took place in Tenby, Cardiff, and along the South Wales Coastline. The production received financial backing from the Welsh Government via Creative Wales. Alongside Matthew Barry, executive producers include Davina Earl and BAFTA winner Nicola Shindler for Quay Street Productions—part of ITV Studios—with Rebecca Ferguson serving as executive producer for the BBC alongside co-commissioner Nick Andrews for BBC Wales. Hannah Daniel wrote episode four, while Andy Newbery directed the first four episodes and Rhys Carter directed episodes five and six, with Guy Hescott serving as series producer.
Frequently Asked Questions About The Last Detectives
What was the original title of The Last Detectives?
The six-part BBC crime drama was originally developed under the working title Old Town Murders before its official rename.

How many episodes are in the first series?
The series consists of six 60-minute episodes, with each murder investigation spanning across two episodes to explore themes of second chances and personal crossroads.
Where can viewers watch the series when it airs?
The drama will be broadcast on BBC One and made available to stream on BBC iPlayer as part of a co-commission between the BBC and BBC Cymru Wales.
Which production companies are behind the drama?
Quay Street Productions, a division of ITV Studios, produces the series in association with and international distribution handled by ITV Studios.
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