Simon R Green and the Nightside?

Summary of this omnibus -

In the secret heart of London, where monsters and humans walk side by side, Private Investigator John Taylor feels at home. He is, after all, the byproduct of one human and non-human rubbing more than just elbows.

Some people pray for the day that Lady Luck smiles on them. But John wishes she'd take her smile elsewhere when she hires him to find the true origins of the Nightside. It's a search that will tell him who—and what—his long-vanished mother truly is. He'll need some help from friends like Madman, Pretty Poison and Sinner if he wants to solve the case—and live another day.

Once the secret comes out, John and his pal Shotgun Suzy travel back in time to put dear old Mum in her rightful place. It'll take some help from Tommy Oblivion, whose ability to reshape reality comes in handy when your long-lost mother wants to kill you.

John's knack for finding things is put to the test when his assistant, Cathy, is kidnapped. He'd like to focus on finding h

Does anyone read Simon Green?