[Hayley might be used to lying, but Skulduggery has over four hundred years' worth of experience catching liars. He can pick out immediately where she isn't being entirely truthful, partly because of the small cues in Hayley's behaviour and partly because he knows Wreath better than he generally wants to.]

Necromancy is addictive. It's easy power, and that makes it dangerous. The Temple is waiting for someone powerful enough to initiate their version of the Rapture, which involves murdering half of the world's population, and there is something very strange about Wreath being capable of teaching it to you in this dimension. Come to think of it, there's something very strange about his being willing. How much have you learned?