An explosive revelation and a familiar face in the sixth book in this adventure-packed series. Still reeling from the life-changing discovery he found buried in

Twelve-year-old Cruz Coronado leaves his home in Hawaii to study and travel with other young people invited to attend the elite Explorer Academy in Washington,

Sailor York and the daring recruits of Explorer Academy uncover an elusive animal-smuggling ring in the first electrifying book in this new five-book series. So

NOW IN PAPERBACK: On an island nation in the Indian Ocean, the explorers venture through a vast underwater world and take part in a friendly robotics competitio

"Cruz and his fellow recruits tackle challenging missions to dispense life-saving medication to gorillas, thwart pangolin poachers, and capture images of the la