The last publication of the year is Unfinished Business, a collection of the five first Ghost Detective short stories.
It contains Just Desserts, Lost Friends, Family Bonds, Common Ground, and Till Death.
When someone dies with unfinished business, their souls linger until they find closure.
A rather tall order when the ghost is stuck within the confines of the cemetery, with minimal means to affect the world of the living.
Robert and Clothilde know their way around the limitations, though. While waiting for their own release, they help the other ghosts deal with their unfinished business and find peace.