Only The Good Spy Young by Ally Carter

After a shocking revelation forces her underground, a teenage spy-in-training scrambles to piece together her mother's secret past and a dangerous conspiracy that threatens her family and friends. Racing across the country, she reunites with allies and faces betrayals, cryptic clues, and life-or-death encounters as she tries to decide whom she can trust and how far she'll go to protect those she loves. Humor, romance, and high-stakes espionage collide as she uncovers truths that change everything she thought she knew.

Purchase from Bookshop.org