Desolate Angel — Chaz McGee

He was once a second-rate cop, a mediocre husband, and an absent father. But ever since he was killed in a drug bust gone bad, Kevin Fahey's been a lost soul in limbo, searching for a way out of his solitude and hoping for redemption. Now he'll have to prove to be a better ghost than he ever was a man...

After I died, I wandered my town, unseen, alone, and wondering why I'd been sentenced to linger in this world. Then Alissa, the victim in a long-ago murder case I'd worked, came to me.
She led me to a body sprawled in the weeds, and, the terrible truth dawned on me: I'd let Alissa's real killer escape. I'd imprisoned an innocent man -- and now another young girl was dead.

I know my redemption lies in righting this wrong. And the only way I can do that is to somehow forge a connection with my replacement on the force, Maggie Gunn. Now I'm haunted by the fear that dragging Maggie into this may turn out to be the biggest mistake of my afterlife...