A high school senior math whiz gets caught up in the FBI's efforts to take down an ecoterrorist group in this explosive YA spy thriller debut. "The perfect combo of Nancy Drew meets Pretty Little Liars ." — Seventeen.com For Farrah "Digit" Higgins, high school used to be about hanging with the popular crowd, trying to blend in and avoid getting outed as the math genius that she is. But after unlocking the code of an ecoterrorist group, there's just no hiding it anymore. The FBI needs her brainpower to catch the culprits, and John, the hot, young FBI agent assigned to help her, actually finds it sexy when she explains the Fibonacci code to him. Digit never would have thought being a brainiac would help her romantic life. But this isn't a game, and Digit's not looking for a prom date. There are criminals out there intent on killing innocent people. Digit's going to have to be at her smartest and bravest to bring them down. "A first novel that combines adventure, mystery, love, and humor. . . . Monaghan shows a talent for creating a likeable heroine and for keeping the pages turning." — Booklist "This novel is so much fun to read . . . thanks to Farrah's smart, witty voice and the gentle romance." — Kirkus Reviews