Death of a Dentist - A Walter Anchor Ghost Detective Story, #4

Walter Anchor spends his afterlife solving murders in the hope of one day solving the toughest murder of all. His own. But when his partner and best ghost-friend Emily convinces him to relive his last few days to find a lead in his very cold case, everything changes. He finds his past and his relationships much more complicated than he remembered and uncovers an unthinkable clue. A clue, that if followed, will force him to reevaluate his life and his afterlife.
From the author of Shuffled Off: A Ghost's Memoir comes a mystery unlike anything seen before.