Night and silence - Aline Templeton

When David marries Tessa he feels life is starting all over again.
He gets a transfer to a small police station in mid Wales, leaving behind the stresses of inner-London policing, his previous marriage, and the son who doesn't want to see him anymore.
Tessa, an artist, will be able to paint from the cosy little cottage in a Welsh village.
But soon David and Tessa realise that they've chosen entirely the wrong village: it's full of unpleasant people, innuendo and nasty looks.
Tessa
is being harrassed by a local youth who turns out to be something much more dangerous than a stalker.
And when a local nurse is killed and David's job become all-important once more, she has no one to turn to...