In the fourth book of the bestselling Cirque Du Freak series, Darren Shan and Mr. Crepsley embark on a dangerous trek to the very heart of the vampire world. But they face more than the cold on Vampire Mountain—the vampaneze have been there before them.

Will a meeting with the Vampire Princes restore Darren's human side, or turn him further toward the darkness? Only one thing is certain—Darren's initiation into the vampire clan is more deadly than he can ever have imagined.