Ian Rankin and Werther Dell'Edera: Dark Entries (2009)

From the Publisher:
Occult detective John Constantine has seen his share of strange things in his career, but nothing could prepare him for the horrors of.reality television. "Haunted Mansion" is currently the hottest show on tv, but when the macabre house actually starts attacking the contestants, Constantine is hired to be the ultimate mole. Locked inside with a cast of wannabe-celebrities, his every move being monitored by a deadly figure from his past, Constantine must figure out who (or what) is pulling the strings before he gets cancelled - permanently...

Ian Rankin and Werther Dell'Edera: Dark Entries. A John Constantine Novel. Vertigo Crime, ISBN: 9781401213862 (September, 2009), 212 p., £14.99, $19.99.