It's an adventure of a lifetime when Cruz Coronado sets sail for the shores of Iceland and Norway aboard the Explorer Academy ship to continue his studies at sea. But, things take a turn while exploring the icy north, when he embarks on a dangerous mission to uncover the first piece of an important puzzle his mother left behind.

In the exciting follow-up to The Nebula Secret in the 7-book Explorer Academy series, Cruz, Sailor, and Emmett, along with their new ally Bryndis, embark on their first globe-trotting mission aboard the ship Orion. Cruz jumps right back into school and starts using the latest technology in submersible underwater dives, but is soon reminded of the dangers of exploration when his equipment fails and he almost drowns. Determined to keep his eyes on the prize, Cruz sneaks away to try to find answers, but unknowingly lures his friends into bigger trouble. When a friend of Cruz's mom meets an untimely end, Cruz's luck really seems about to run out and the questions multiply. What does the message mean? Where will it lead? Who is following him? And why?

This captivating book is the sequel every Explorer Academy fan is waiting to read!


Kindle Edition, 208 pages
Published on March 19, 2019 by Under the Stars
ISBN-10: 1426333064
ISBN-13: 9781426333064
6 Book Reviews
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  • area 51 lolWednesday, November 6, 2019 at 6:04 pm
    seems interesting not gonna lie. hope I can buy this book somewhere
    • belle252
      belle252Sunday, June 16, 2019 at 12:01 pm55 stars
      I read the first book and I just needed a part two, Cruz is trying to find what his mother left for him. His mother left him a bunch of puzzles and its up to Cruz to find what the pieces are. Sounds easy right, well no some people are after him and want him to die. This book is so good, as Cruz tries to figure out where his mother put the next clue and how to get it. I can not wait for a part three in this amazing book.
      • AurelioThursday, March 21, 2019 at 4:58 am
        it is good
        • AdaraTuesday, March 19, 2019 at 1:09 pm
          It was good
          • benboss
            benbossMonday, January 7, 2019 at 10:37 am55 stars
            • tyker
              tykerSunday, December 30, 2018 at 2:25 pm55 stars
              I want this book because they do not have it at the library. This book and the Nebula secret Are so far thee best series I will ever read. (I've already read the Nebula secret, but I'm reading it again, that's how good it is.) When I grow up I will want to be an explorer, just like my mom and dad. Reading this series makes me feel encouraged to be whatever I longed to be. I loved the nebula secret, with it's all-out adventure.