The O'Brien by Frances Powell

After being betrayed by her cheating husband, Catherine (Cat) Murphy and her Irish Wolfhound, The O'Brien, leave their home in Annapolis, Maryland and escape to a small fishing village on the wild western coast of Ireland hoping to find peace and quiet. But when The O'Brien unearths a small skeleton in their cottage garden with ties to the disappearance of the handsome Lord Granville's young wife, Cat is swept headfirst into a web of mystery and danger. Will her delving into buried secrets place her in grave danger? Having saved her once will the loyal O'Brien be able to keep her safe from the evil lurking at the manor?