She'd reacted almost the exact same way Valkyrie had, right down to the incredulous expression on her face. "Yes," he answered simply. "Four hundred." He'd spent most of that time dead, of course, but if the fellow mage was having enough problems with his age, it was probably best to let her ask her questions in her own time.

Skulduggery tried pulling the book out again, and again it stuck before it came all the way out, stubbornly fixed in place no matter which way he tried to drag it. "See how it looks like it's part of the bookcase?" he explained, pushing it back into its slot. "It might not make the bookcase rotate, but it has all the makings of some kind of secret passage. I'll admit, I'm still fairly new, so I don't know if that sort of thing happens here. But, short girl, if it does, I'm almost sure it would only work at night. It's worth a look, don't you think?"

It probably wouldn't amount to anything - Skulduggery's luck had never been very kind to him, after all - and if that was the case, he could always go and examine that morgue she mentioned. It might help him understand how he'd been brought back to life.