Ghost of a Chance — Kate Marsh

There are other worlds with mysteries to solve--worlds where not all of the suspects are technically alive. That's where Karma kicks in.

For all those transmortis anomalies that need to be exterminated, there's Karma Marx--a woman who exorcises haunted houses, sending troublesome spirits and entities to the ever after. Spider, her cheating, sleazy real estate agent husband, is proving more difficult to banish. So she makes him a deal: She'll clean one last home for him if he grants her a divorce.

The only problem is that Adam Dirgesinger, the home's former owner, isn't happy with Karma's plan. Using his poltergeist powers he seals the place, trapping Karma, Spider, and a motley assortment of other characters (some living, some not so much) together for a hair-raising twelve hours. But when Spider turns up dead in the basement, it's a locked-house mystery, and Karma's determined to reveal the truth, even if it means tackling all of the house's inhabitants--mortal and otherwise.