By Alan Harris
Fourth in the latest series of the magical drama set in Glan Don, a mysterious village perched on the wild Welsh coast.
Gareth makes a shocking discovery about Guto.
Starring Elis James (Josh), Emma Sidi (W1A) and Ifan Huw Dafydd (Gavin and Stacey).
Series created by Meic Povey
Directed by James Robinson and Nigel Lewis
A BBC Cymru Wales Production. Show less