"hidden" Episode #3.1(2021) Apr 2026

(Welsh: Craith ) Season 3, Episode 1, originally aired in late 2021 on S4C and later on BBC in 2022. This final season begins with a bleak, atmospheric investigation into a brutal murder in North Wales. Plot Summary

: The episode introduces brothers Siôn and Glyn Thomas . Siôn is a deeply unhappy construction worker struggling to provide for and protect Glyn, who has Down syndrome. Their tight bond and Siôn's simmering anger suggest they are central to the unfolding mystery. "Hidden" Episode #3.1(2021)

The episode opens with the discovery of local farmer body in a remote river in the North Wales countryside. DCI Cadi John (Sian Reese-Williams) and DS Owen Vaughan (Sion Alun Davies) are called to investigate what appears to be a "brutal and frenzied attack". Key narrative developments include: (Welsh: Craith ) Season 3, Episode 1, originally