Raven Black by Ann Cleeves

This is the first in a quartet featuring D I Jimmy Perez. He's rather a reluctant investigator, unearthing information that locals would prefer to remain hidden.

It's set in the Shetlands and gives some familiar glimpses of life in a small Island community. There's a kind of hierarchy depending on how long you've lived there, and open secrets that are never discussed. 

There's an interesting insight into life in a bird observatory on the Island, and Ann Cleeves captures the sometimes claustrophobic and isolating nature of an enclosed community. 

The icy cold of New Year's Eve adds to the atmosphere when a young girl is found strangled. The reclusive Magnus Tait is the local scapegoat, but D I Perez is not so sure...