Award-winning, critically acclaimed author Alan Gratz (Prisoner B-3087) returns with another gripping World War II story, this time about a spy in the Hitler Yo

An instant New York Times bestseller!Alan Gratz, bestselling author of Refugee, weaves a stunning array of voices and stories into an epic tale of teamwork in t

"Noah Keller has a pretty normal life until one wild afternoon when his parents pick him up from school and head straight for the airport, telling him on the ri

From Alan Gratz, the #1 New York Times bestselling author of Refugee, comes this wrenching novel about one boy's struggle to survive ten concentration camps dur

A comprehensive and practical framework for ethical practices in contemporary cybersecurity While some professions – including medicine, law, and engineering