Christmas. And an entire office block of revellers has disappeared into thin air.
DI Jack Cardiff and his investigating squad are about to discover the Hell that is "Darkfall", where bricks and plaster and stone have a life of their own, where the inexplicable and the insane become horrifyingly real.
And for those trapped in the block and cut off by the violent weather, a terror beyond imagination is about to descent from the howling tempest.
