A Long Hard Fall - A Walter Anchor Ghost Detective Story, #3

Walter Anchor spends his afterlife solving murders in the hope of one day being good enough to solve the toughest murder of all. His own. But when his partner and best ghost-friend Emily finds a body on top of a skyscraper killed by a long, hard fall, it leads to more clues and more suspects than the two of them can handle. It will take a team of ghosts working together with the Tucson police department to solve a murder this bizarre.
From the author of Shuffled Off: A Ghost's Memoir comes a mystery unlike anything seen before.