The first book in an addictive new urban fantasy series of gods & demons martial arts & mythology from the author of White Tiger. It is eight years since Xuan Wu God of the Northern Heavens living in Hong Kong as wealthy businessman John Chen was exiled from the mortal realm. Emma & John's daughter Simone are facing a new series of threats. Leo their best fighter is sitting in Hell but when they journey below to persuade him home nothing is as it appears. On Earth Simon Wong the Demon King's son is no longer around to trouble them but his associates have taken over Simon's underworld activities. The otherworldly stones are being targeted & are in danger of their kind being completely destroyed. It seems that the Demon King is the only one Emma can turn to for help...