Jeff Chen

Jeff Chen is a children's author and professional puzzle creator who writes fast-paced adventures and interactive mysteries. He is the author of the futuristic middle-grade sports adventure Ultraball series, which includes the novels Lunar Blitz and Deathstrike. He frequently incorporates his expertise in crosswords and logic games into his storytelling. He also co-authored the interactive companion book Spy School Entrance Exam with Stuart Gibbs, bringing clever word searches and puzzles to the popular spy universe.