Nightside, tome 4
Simon R. Green2005

Lady Luck has hired John Taylor to investigate the origins of the Nightside--the dark heart of London where it's always 3 A.M. But when he starts to uncover facts about his long-vanished mother, the Nightside--and all of existence-- could be snuffed out.

Titre original : Nightside, book 4 : Hex and the City (2005)