The fourth book in the New York Times bestselling series The Secrets of the Nicholas Flamel -- The Necromancer

San Francisco:
After fleeing to Ojai, then Paris, and escaping to London, Josh and Sophie Newman are finally home. And after everything they've seen and learned in the past week, they're both more confused than ever about their future. Neither of them has mastered the magics they'll need to protect themselves from the Dark Elders, they've lost Scatty, and they're still being pursued by Dr. John Dee. Most disturbing of all, however, is that now they must ask themselves, can they trust Nicholas Flamel? Can they trust anyone?

Alcatraz:
Dr. Dee underestimated Perenelle Flamel's power. Alcatraz could not hold her, Nereus was no match for her, and she was able to align herself with the most unlikely of allies. But she wasn't the only one being held on the island. Behind the prison's bars and protective sigils were a menagerie of monsters-an army for Dee to use in the final battle. And now Machiavelli has come to Alcatraz to loose those monsters on San Francisco.
Perenelle might be powerful, but each day she weakens, and even with Nicholas back at her side, a battle of th...