Second Grave on the Left

Yes the title is significant. A valuable clue is hidden there in this 2nd installment in the "Charley Davidson" Series by Darynda Jones (see also my post on First Grave on the Right; you might want to wait to read the post on Dirt on the Ninth Grave as there are some real spoilers there for earlier installments). This is another wild ride with Grim Reaper, Charley Davidson, who in her regular life is a private detective. She has the ability of being able to see and talk to dead people who have not yet passed over, and to help them reach the other side.  Her father, a former detective, and her Uncle Bob, currently a detective with the Albuquerque PD, have, with her help,  solved an uncommonly high percentage of cases. People are a little suspicious and, in some cases, openly hostile at her ability to find killers.
When best friend and receptionist Cookie drags Charley out of bed in the middle of the night to help find a missing friend, Charley is awakened from a dreamy conversation with Reyes Farrow, the Son of Satan (yes, literally). Reyes has vacated his human body, which was in a coma in a prison hospital, and is being held prisoner by torturing demons. But he won't tell Charley where he is because she is the real target of his kidnapping--a portal to heaven for the evil creatures. Nevertheless he visits her in her dreams with lust in his heart. So Charley is trying to find Reyes on her own and trying to find Cookie's friend Mimi before a killer does. Fast-paced plot, sex, the supernatural, humor, and a kick-ass woman PI... these books have it all!