The Clue of the Black Keys

Nancy Drew, a teenage detective, embarks on a mission to discover the long-lost treasure of a famous Mexican adventurer. The quest takes her to Mexico, where she must solve riddles, find hidden keys, and navigate dangerous environments to uncover the secret of the black keys. Alongside this adventure, Terry Scott, a young archaeology professor, seeks Nancy’s help to unearth an ancient secret, which can only be unlocked by three black keys. During an archaeological expedition in Mexico, Terry and Dr. Joshua Pitt discovered a clue to buried treasure carved on a stone tablet. However, before the cipher could be translated, the tablet and Dr. Pitt disappeared, with suspicions falling on the Tinos, a Mexican couple posing as scientists. Nancy and her friends follow a tangled trail of clues that lead from the Florida Keys to Mexico, engaging readers in a suspense-filled story.