Warlock, Paperback by Scott, Michael, ISBN 0385735340, ISBN-13 9780385735346, Like New Used, Free shipping in the US

Josh has chosen to side neither with his twin sister Sophie nor Nicholas Flamel, but rather to fight alongside Dr. John Dee and Virginia Dare, while the immortal Machiavelli and Billy the Kid plan to set loose the monsters of Alcatraz on San Francisco.