Notes

223 pages :

colour illustrations.

Summary: Cruz, Sailor, Emmett, and Bryndis journey to the most mysterious destinations yet in search of the third piece of Cruz's mum's cipher. But with Aunt Marisol off in Hawaii searching for his missing dad, Cruz is more vulnerable than ever. There's security everywhere, yet someone is able to break into his cabin and ransack his room. A mysterious message arrives, warning him that someone close to him is working for Nebula. Not knowing who -- or what -- is safe, Cruz hides his treasured cipher necklace in the only place he knows no one will look. As an important deadline looms largely on the horizon, can the explorers pull of their most dangerous mission yet? After all, in this worldwide scavenger hunt, there are no second chances.

Explorer Academy ;
3.