The Night Chasers - Walker Wesley W.

Betrayed by a trusted colleague and trapped in a manor corrupted by an unearthly evil, a band of survivors struggle to unravel a tangled, supernatural riddle kept in the cellar below. As hope dwindles, they must turn to a little girl to be the key to their salvation and save the world from a fate of fire and shadow. Halfway around the world, a police detective investigates a series of brutal murders with the help of a reclusive heroin addict in what becomes a race to find the little girl before the killer does.