The Swimmer is David Haynes first book and as a début (albeit with an overhaul), this is a very good book.
May and Joseph start investigating the case of an unknown swimmer whose battered body washes up on shore on a winter's day in Cornwall. The story is not just set in the present, but goes back a hundred years into Cornwall's tin mining industry era.
In the main, this is a quite gentle murder/mystery although there are a small handful of swear words that sometimes stopped me short. I enjoyed the descriptions of the bleak winter landscapes and seascapes. Even I was feeling a bit damp at times reading the story.