Y Gwyll / Hinterland is produced by Fiction Factory in association with S4C, Tinopolis, BBC Cymru Wales, the S4C Co-Production Fund and ALL3MEDIA International ltd. The series includes 4 stories - each of 120 minutes duration – and has been produced bilingually in both Welsh and English simultaneously.
How to watch
In Wales: Freeview 4, Virgin TV 166, Freesat 104, Sky 104, Sky (without subscribing) 134. S4C HD: Sky 104, Freesat 104. In England, Scotland and Northern Ireland: Freeview not available, Virgin TV 166, Freesat 120, Sky 134. Sky HD: Sky 134, Freesat 120. Online across the UK on S4C's website - s4c.co.uk/clic - where it is available on demand for 35 days. Viewers across the UK can watch S4C live on tvcatchup.com