Red Bones

This was such an interesting mystery. Ann Cleeves continues to amaze me with her incredible writing.
She weaves her tales in such a way that you can't be sure who the murderer is. It could be any of them or, was it really just an accident and a suicide?

Two young Archaeologists look for evidence of a merchant's house on an old woman's property on Whalsay. They thought they had found some red fragments of pottery as they dug but it turned out to be red bones. They were excited that they may have found the bones of the merchant but someone else on the Island was not as excited. The old woman was later found shot to death. It was presumed to be an accident but later there was another death. It looked like a suicide but didn't make sense. Perez realized he needed to learn more about the families that live on Whalsay and figure out what is going on before more people die.