A debut entry in an alternate-history series depicts three kids who try to solve a modern-world puzzle and complete a treasure hunt laid into the streets and bu

National Book Award finalist Laura Ruby returns with the middle chapter in her epic alternate-history adventure—a journey that will test Tess, Theo, and Jaime

"Two epic people, love, hackers, and explosions lead to an amazing read." -- Not So Public Library Alone and on the run, Cipher doesn't talk about her secrets,

Explains various methods used in cryptography and presents examples to help readers in breaking secret codes

The thrilling conclusion to two-time National Book Award finalist Laura Ruby’s epic adventure through the streets of an alternate New York City. It was only a