Y Gwyll - Season 2

Mathias is under pressure. Meg Mathias, his wife, has turned up in Aberystwyth, and he's under investigation by the IPCC following the death of Mari Davies. When a bus driver's body is found shot on an isolated mountainside, the investigation provides a welcome escape for DCI Mathias.

The team have a suspect to question, but Mathias believes he is an unlikely killer. In his current state of mind, Mathias is fascinated by the lifestyle choices of ex-soldier John Bell. He also knows that he cannot avoid Meg for much longer.

The murder of a local dignitary and barrister leads to the uncovering of a tragic story of love and loss fuelled by distrust and suspicion in the depths of the Hinterland.

Why did Nora and Daniel live such a secluded life? What has Mathias discovered in the garden?

The discovery of a body in a lake leads to an investigation about a local primary school teacher.

In a world full of dark secrets will Mathias and the team unravel them before another person is killed?

A burnt body on the dunes embroils the team in a long-standing family feud with a connection to the murder of a young mother 13 years earlier. Mathias is convinced the young woman's murder holds the answers, but Prosser isn't keen on Mathias delving into the past.

Who is stalking Mathias? Is it related to the murder of Aron Bowen? All will be revealed in the series' climax.