The One That Got Away, written by Catherine Tregenna, is more on the noirish, thriller side of Acorn TV’s mystery roster, along the lines of Inspector Ellis or Mystery Road.

In Cleddau/The One That Got Away episode 1 DI Lloyd and DS Sheldon are reunited as ghosts from an old case return.

The One That Got Away is the English-language version of Cleddau, which aired on S4C last year. Here's where to watch The One That Got Away online for free – from anywhere. Swipe to scroll ...

The One That Got Away, written by Catherine Tregenna, is more on the noirish, thriller side of Acorn TV’s mystery roster, along the lines of Inspector Ellis or Mystery Road.

BBC's newest psychological thriller, The One That Got Away, originally titled Cleddau, premiered on BBC One Wales on Tuesday, February 25, 2025, and is now available to stream on BBC iPlayer.

The One That Got Away is available to stream now on BBC iPlayer. Ad Check out more of our Drama coverage or visit our TV Guide and Streaming Guide to find out what's on.