Mathias is under pressure. His wife Meg has turned up in Aberystwyth and he's under investigation by the IPCC following the passing of Mari Davies at the end of the last episode. When a bus driver is found shot dead on an isolated mountainside, the investigation provides a welcome escape.

Mathias is under pressure. His wife Meg has turned up in Aberystwyth and he's under investigation by the IPCC following the passing of Mari Davies at the end of the last episode. When a bus driver is found shot dead on an isolated mountainside, the investigation provides a welcome escape.

The cuddle of a local dignitary and barrister leads to the uncovering of a tragic story of love and loss fuelled by mistrust and suspicion in the depths of the Hinterland. Why were Nora and Daniel living such a secluded life? What has Mathias discovered in the garden? Will he find Daniel before Glyn Powell gets hold of him? The clock is ticking, but Mathias knows that the relationship between Branwen Powell and Daniel is key to uncovering the truth.

The cuddle of a local dignitary and barrister leads to the uncovering of a tragic story of love and loss fuelled by mistrust and suspicion in the depths of the Hinterland. Why were Nora and Daniel living such a secluded life? What has Mathias discovered in the garden? Will he find Daniel before Glyn Powell gets hold of him? The clock is ticking, but Mathias knows that the relationship between Branwen Powell and Daniel is key to uncovering the truth.

The discovery of a body in a remote lake leads Mathias and the team to investigate the complicated private life of a missing teacher from a small rural school. What is Gwilym's secret? Who is Ben Willis? Why did another ex-teacher commit sleeping? Who is the mysterious girl and why is she hiding from Mathias? Is Greta still alive? This is a world rife with secrets. Will Mathias and the team unravel them in time or is it already too late?.

The discovery of a body in a remote lake leads Mathias and the team to investigate the complicated private life of a missing teacher from a small rural school. What is Gwilym's secret? Who is Ben Willis? Why did another ex-teacher commit sleeping? Who is the mysterious girl and why is she hiding from Mathias? Is Greta still alive? This is a world rife with secrets. Will Mathias and the team unravel them in time or is it already too late?.

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

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