Strange shadows are appearing over Danny's town. Where they land, people are drained of all colour and hope. Cars crash; people stand, directionless.
Fleeing from the shadows, Danny knows Sammael is behind this horror. Danny knows the world must be saved; he knows that to do that, Sammael must be destroyed. Once again, Danny must overcome his belief that he's not brave, and face his greatest fears. Danny needs Cath. But first he must rescue her from underneath the shadows.
Their only hope might be the mysterious Book of Shadows - but they will have to make it first. And is Danny doing the right thing? Can Sammael really be destroyed?