Mathias is under pressure. His wife Meg has turned up in Aberystwyth and he's under investigation by the IPCC following the death 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.
Elenco:
Richard Harrington
,
Mali Harries
,
Hannah Daniel
,
Alex Harries
,
Aneirin Hughes
.