Author Kevin Emerson channels Frank Cottrell Boyce in this tween sci-fi adventure about two kids from opposite sides of the country who find themselves on a road trip to save the world from an impending alien attack. Haley and Dodger have nothing in common. But that was before they learned about the strange, unexplainable phenomena in Juliette, Arizona. Before they both received summer research grants from a mysterious foundation and discovered their...

Returning to Superstition Mountain, the Barker brothers, along with their friend Delilah, soon find themselves entangled in more danger and myststery as they uncover a treasure.

Grandfather Shortpaws sends Geronimo Stilton on a hunt for his old friend, the Red Bandit, in Arizona.

After discarding their infamous homework machine, four friends, now in sixth grade, find themselves once again at the police station, this time giving testimony about an incident involving a powerful computer chip, a Grand Canyon treasure, and a dead body.

Nancy arrives in Phoenix, Arizona, eagerly looking forward to a fun-filled vacation at Shadow Ranch but finds herself embroiled in a baffling mystery involving a phantom horse and buried treasure. Local people believe that the ghostly animal is carrying out the curse of Dirk Valentine, the romantic outlaw who was killed many years ago at Shadow Ranch, where he had gone to fulfill a promise to his sweetheart. Suspecting that a treasure hidden by Valentine...