Darren Shan, the Vampire's Assistant, leaves the Cirque Du Freak with Evra and Mr. Crepsley - but so it seems, does someone else. Corpses drained of blood are discovered in the city and beneath the streets, evil stalks Darren and his friends. Can they escape, or are they doomed to perish in the Tunnels of Blood? Part 3/7, previous part The vampire's assistant.