The Inheritance Murders — E. Johnson

When PA Crystal's boss turns up sick, it is up to her to go to a rich client's house and support him as his family prepares for their uncle's passing. Finding her boss's sex -- filled emails makes Crystal determined to stay professional at all costs. 

That is until she meets the client's brother, who is exactly her type of sexy. When the uncle dies in suspicious circumstances, Crystal takes on more duties than your average PA: funeral tasks, investigate multiple deaths, search a haunted house and become a sexual playmate. But someone doesn't want her around, and they're willing to kill to keep their inheritance. Too bad for them Crystal's got a few tricks of her own. For in this tale of sex, murder and ghosts, sometimes the hired help is a bit more than average, and sometimes bodies just won't stay dead.