In this fourth installment in the New York Times bestselling series from Edgar Award winner James Ponti, the young group of spies go codebreaking in Cairo in another international adventure perfect for fans of Spy School and Mrs. Smith’s Spy School for Girls.

Codename Kathmandu, better known as Kat, loves logic and order, has a favorite eight-digit number, and can spot a pattern from a mile away. So when a series of cyberattacks hits key locations in London while the spies are testing security for the British Museum, it’s clear that Kat’s skill for finding reason in what seems like randomness makes her the perfect candidate to lead the job.

James Ponti is the New York Times bestselling author of three middle grade book series: the all-new City Spies, about an unlikely squad of five kids from around the world who form an elite MI6 Spy Team; the Edgar Award–winning Framed! series, about a pair of tweens who solve mysteries in Washington, DC; and the Dead City trilogy, about a secret society that polices the undead living beneath Manhattan. His books have appeared on more than fifteen different state award lists and he is the founder of a writers group known as the Renegades of Middle Grade. James is also an Emmy–nominated television writer and producer who has worked for many networks including Nickelodeon, Disney Channel, PBS, History, and Spike TV, as well as NBC Sports. He lives with his family in Orlando, Florida. Find out more at JamesPonti.com.

Lauren Tarshis is the author of the New York Times bestselling I SURVIVED series which tells stories of young people and their resilience and strength in the midst of unimaginable disasters. Lauren has brought her signature warmth and exhaustive research to topics such as the September 11 attacks, the destruction of Pompeii, Hurricane Katrina, and the bombing of Pearl Harbor, among others. Lauren lives in Westport, Connecticut. In addition to writing the I SURVIVED books, Lauren is the editor of Storyworks magazine.