Jude Watson

Seventeen-year-old Mattie leaves her sister Ivy in Last Chance, California, and disguises herself as a boy in order to get a job with the Pony Express, finding adventure, facing danger, and falling in love.

Could Amy and Dan's biggest enemy be . . . a friend? The 39 Clues Book 6 challenges everything you thought you knew about the Clue race. JOIN ANYTIME TO PLAY FOR THE CHANCE TO WIN! The 39 Clues gets treacherous. Book 6 takes Amy and Dan across oceans on the trail of a famous aviator, but they find more than they're …