The One That Got Away, also known as Cleddau, is a British crime thriller series created for BBC Four. Written by Catherine Tregenna, the six-part series stars Richard Harrington, Rhian Blythe, and Elen Rhys. The story takes place in a small Welsh town where a nurse’s murder leads the police to investigate past crimes, fearing a copycat killer.
They must solve the case before history repeats itself. The English-language adaptation of the Welsh-language drama Cleddau premiered on October 13, 2024, on S4C, with a wider release on BBC Four, BBC Wales, and BBC iPlayer on February 25, 2025.
Where Was The One That Got Away Filmed?
The series was filmed entirely in Wales, UK, capturing the authentic atmosphere of the story’s setting. The production team primarily shot in Pembroke Dock and other parts of Pembrokeshire, South West Wales.
Pembroke Dock, Wales, UK

Most of the series was filmed in Pembroke Dock, a town in Pembrokeshire, South West Wales. Known for its maritime history, Pembroke Dock developed significantly after the establishment of the Royal Navy Dockyard in 1814. The town also played an essential role as a military and shipbuilding center and later served as a key flying boat station during World War II. Many of the series’ key scenes were filmed in recognizable parts of the town, bringing an authentic local feel to the story.
Western Cleddau, Wales, UK

Some scenes in the series take place along the Western Cleddau River, where characters are seen meeting or reflecting by the water. This river, which merges with the Eastern Cleddau to form the Daugleddau estuary, is known for its diverse ecology, including otters and various fish species. The surrounding valleys also show signs of past glacial activity, adding to the natural beauty of the area.
When Did the Filming of The One That Got Away Take Place?
Filming for The One That Got Away began in late 2023 and continued into 2024. The series was shot across different locations in Pembroke Dock and nearby areas in Pembrokeshire, Wales.
Official Trailer
FAQ
Q: What is The One That Got Away about?
A: The series follows a small-town murder case in Wales, where police discover eerie similarities to past crimes. As they investigate, they fear a new killer is copying history—and they must solve the case before another murder happens.
Q: Where was The One That Got Away filmed?
A: The series was filmed in Pembroke Dock, Wales, and surrounding areas in Pembrokeshire, South West Wales.
Q: When did The One That Got Away start filming?
A: Filming began in late 2023.
Q: When did The One That Got Away finish filming?
A: Filming wrapped in mid-2024.
Q: When will The One That Got Away be released?
A: The series premiered in the United Kingdom on October 13, 2024, on S4C and will be broadcast on BBC Four, BBC Wales, and BBC iPlayer starting February 25, 2025.