Wraith (Zoe Martinique, Book 1) (A Zoe Martinique Investigation)

Zoë Martinique was just your average, single female, past 25, looking for love and/or exciting job opportunities. Then life handed her the dubious ability to travel outside of her body at will—which she turned into a career, hiring herself out as a literal spook.
 
But one night things get out of hand while she is out-of-body: Zoë witnesses a murder. What’s worse, the killer is also a traveler—who not only sees her but tries to pursue her.
 
To save herself, Zoë must somehow guide the very handsome detective assigned to the case to the truth without revealing herself. And with the help of her semi-psychic mom, a pair of gay ghosts, and her best friend (a Goth techno witch), she also has to figure out exactly who—and what—the murderer is, before he finds her and puts an end to her traveling—permanently.