Book II of Department of Unclassified Artefacts. George Archer, Liz Oldfield and Eddie Hopkins have made a rather unfortunate discovery: vampires really exist and they do feed on human blood. Using a labyrinth of tunnels beneath Victorian London, these sinister creatures are intent on destroying the human race and they'll start by taking over the most powerful place in London - the Houses of Parliament. Liz, George and Eddie come up with a plan to beat the vampires at their own game. And they'd better do it soon...