Nightingale's Lament: Nightside, Book 3
"Taylor is the name. John Taylor....My card says I'm a detective, but what I really am is an expert on finding things. It's part of the Gift I was born with as a child of the Nightside - the hidden heart of London where it's always three a.m., where inhuman creatures and otherworldly gods walk side-by-side in the endless darkness of the soul.
"Assignment: Find out why the local diva called the Nightingale has cut herself off from her family and friends. I'm also wondering why her suicide-prone fans think she has a voice to die for. Literally...."