Fifth Grave Past the Light — Darynda Jones

Charley Davidson may not look like your everyday, run-of-the-mill grim reaper, but she has vowed to reap grimness wherever she goes despite this unfortunate fact. Sadly, she gets sidetracked when the sexy, sultry son of Satan, Reyes Farrow, moves in next door. Since he is her main suspect in an arson case, she has vowed to stay away from him until she can find out the truth. But when dead women start appearing in her apartment, one after another, each lost, confused, and terrified beyond reason, Charley has no choice but to ask for his help, especially when it becomes apparent that her own sister Gemma is the serial killer's next target. With Reyes's ability to observe incorporeally, surely he can find out who's responsible. Even if he can't, arsonist or not, he is the one man alive who could protect Gemma no matter who or what came at her. But he wants something in return. Charley. All of her, body and soul. And to keep her sister safe, it is a price she is willing to pay.