Common Ground by Wallace, R W

Life as a ghost can be a lonely existence and Robert counts himself lucky to have had Clothilde by his side for thirty years.u2029u2028They watch the seasons pass and the mourners weep. Other ghosts come and go as they deal with their unfinished business.u2029u2028When Clothilde makes quick friends with a new arrival, Robert marvels at seeing her laugh and behave like a teenager again — even if it means loneliness for him.u2029u2028She deserves some happiness.u2029u2028But when a second girl arrives in their cemetery, a pattern emerges. Robert and Clothilde must once again apply their crime-solving skills to go after their new friends’ murderer.