I couldn't use the Stone of Blood to search for others — only full-vampires were able to do that — but I could be traced through it, since it had taken blood from me when I became a Prince.

If the Stone ever fell into the hands of the vampaneze, they could use it to track down all the vampires who'd bonded with it. Hiding from them would be impossible. They'd annihilate us. Because of this danger, some vampires wanted to destroy the Stone of Blood — but there was a legend that it could save us in our hour of greatest need.

I was thinking about all this while Paris used the Stone of Blood to manoeuvre troops in the field. As reports reached us of vampaneze positions, Paris used the Stone to check where his Generals were, then communicated telepathically with them, giving them orders to move from place to place. It was this which drained him so deeply. Others could have used the Stone, but as a Prince, Paris's word was law, and it was quicker for him to deliver the orders himself.

While Paris focused on the Stone, Mr. Crepsley and me spent much of our time putting field reports together and building up a clear picture of the movements of the vampaneze. Many other Generals were also doing this, but it was our job to take their findings, sort through them, pick out the more important nuggets, and make suggestions to Paris. We had loads of maps, with pins stuck in to mark the positions of vampires and vampaneze.

Mr. Crepsley had been intently studying a map for ten minutes, and he looked worried. "Have you seen this?" he asked eventually, summoning me over.