Tree on a Hill (2023)

A long-married, very ordinary couple end up on the wrong side of the law in a bypassed town near Bannau Brycheiniog, and the tone is dark comedy rather than grim crime. Nia Roberts and Rhodri Meilir play Margaret and Clive, and the upper Swansea Valley around Ystradgynlais stands in for fictional Penwyllt. Shot twice from the same script as Pren ar y Bryn and Tree on a Hill, it has a twist in the English version: writer Ed Thomas set it in a world where Welsh has been forgotten and is only a memory. Watching both is an unusual way to see what the language adds. Six episodes, with both versions on BBC iPlayer in the UK.