Dark, brooding, atmospheric, haunting, understated Beautiful hauntingly appropriate music. The magnificent landscape is a major player as it always is in Welsh life. The characters are at one with their surroundings deeply moulded by the dark forebidding landscape. The use of Welsh is as it is. Welsh interspersed with English or English interspersed with Welsh. I love this touch of realism. All the people involved in the making of this series are home-grown and all due credit to them. Matthias lives in a caravan on the mountainside. How does he come to be living there? What is his unknown past? I live in a caravan myself in the north-west of England and spend several weeks of the winter tucked away in a cottage somewhere in Wales. Am I as dark, melancholy and troubled as Matthias? Probably. The stories and characters are complex and closely interwoven. Always maintaining tension and anticipation and achieving this within one self-contained episode rather than a whole series. Limiting this series to BBC2 Wales is to do it a dis-service. It should be more widely available for general viewing. I don't usually write reviews but I absolutely love this series. But don't overdo it and do it to death as happens with so many series. I only saw a couple of the episodes first time round so am looking forward to catching up with the ones I missed.