Fifteen-year-old Josh has chosen to side neither with his twin sister Sophie nor with the Alchemyst, Nicholas Flamel, but rather to fight alongside Dr. John Dee and the mysterious Virginia Dare, while the immortal Machiavelli and Billy the Kid follow the Elders' plans to set loose the monsters of Alcatraz on San Francisco and trigger the end of the humani race.

Just after twelve-year-old Emily and her family move to San Francisco, she teams up with new friend James to follow clues in an odd book they find, hoping to figure out its secrets before the men who attacked Emily's hero, publisher Garrison Griswold, solve the mystery or come after the friends.

Fourteen-year-old Sydney is a surfer and a rebel from Bondi Beach, Australia. She's also a field ops specialist for the City Spies. Sydney is excited to learn that she'll be going undercover on the marine research vessel the Sylvia Earle. But things don't go exactly as planned, and while Sydney does find herself in the spotlight, it's not in the way she was hoping. Meanwhile, there's been some new intel regarding a potential mole within the organization,...