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Adventure, danger, and a thrilling global mission await 12-year-old Cruz Coronado as he joins an elite school for explorers.

Cruz leaves his tranquil home in Hawaii to join 23 talented kids from around the globe to train at the Explorer Academy with the world's leading scientists to become the next generation of great explorers. But for Cruz, there's more at stake. No sooner has he arrived at the Academy than he discovers that his family has a mysterious past with the organization that could jeopardize his future. In the midst of codebreaking and cool classes, new friends and augmented reality expeditions, Cruz must tackle the biggest question of all: Who is out to get him, and why?

Readers can get in on the excitement with puzzles and codes embedded throughout.

Hardcover, 208 pages
Published on September 4, 2018 by Under the Stars
ISBN-10: 1426331592
ISBN-13: 9781426331596
19 Book Reviews
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  • Thunder4546Wednesday, September 19, 2018 at 6:56 am
    It was an amazing book
    • RasinduTuesday, September 18, 2018 at 11:00 pm
      When Cruz gets in to Explorer Academy he discovers an ancient mystery about his mom! While they go on many missions something is very wrong, the Nebula (a drug company) wants to kill Cruz and they also killed his mom too! Now when Cruz goes on a series of adventures with friends, he finds many clues and discovers beyond what he knows! Now Cruz has a lot of questions, who is the man that keeps following him? What do the Nebula want from him? READ THIS BOOK TO FIND OUT!!!!! this looks cool! This book is awesome and I am so jealous of Cruz right now, If you are interested in codes and puzzle solving there might not be a better book than this the best part is that it has pictures in it which made it so easy to visualize what was happening and over all i love this book. When 12-year-old Cruz Coronado is picked to join Explorer Academy to one day become a scientist everything seems perfect. He and his bunk mate get along, and classes go well, but when he finds someone is out to get him things go from great to weird. Who is out to get him is the question that fills his head. Hidden ciphers and codes, plus adventure and more is packed into this book. Is he safe?, or will he have to leave the academy? Find out in Explorer Academy: The Nebula Secret. This book is great! There was a picture of this chart that had symbols that means the alphabet.There were lots of codes in the book. It was fun to break the code and see the message. I can't wait to read the second book in the series, The Falcon's Feather!
      • manMonday, September 17, 2018 at 7:59 am
        cool i like it
        • OofSunday, September 16, 2018 at 10:11 am
          Wait is it just me or leancool’s comment is an entire copy paste of other people’s comments... ?
          • leanecool
            leanecoolSunday, September 9, 2018 at 1:04 pm55 starsFeatured
            When Cruz gets in to Explorer Academy he discovers an ancient mystery about his mom! While they go on many missions something is very wrong, the Nebula (a drug company) wants to kill Cruz and they also killed his mom too! Now when Cruz goes on a series of adventures with friends, he finds many clues and discovers beyond what he knows! Now Cruz has a lot of questions, who is the man that keeps following him? What do the Nebula want from him? READ THIS BOOK TO FIND OUT!!!!! this looks cool! This book is awesome and I am so jealous of Cruz right now, If you are interested in codes and puzzle solving there might not be a better book than this the best part is that it has pictures in it which made it so easy to visualize what was happening and over all i love this book. When 12-year-old Cruz Coronado is picked to join Explorer Academy to one day become a scientist everything seems perfect. He and his bunk mate get along, and classes go well, but when he finds someone is out to get him things go from great to weird. Who is out to get him is the question that fills his head. Hidden ciphers and codes, plus adventure and more is packed into this book. Is he safe?, or will he have to leave the academy? Find out in Explorer Academy: The Nebula Secret. This book is great! There was a picture of this chart that had symbols that means the alphabet.There were lots of codes in the book. It was fun to break the code and see the message. I can't wait to read the second book in the series, The Falcon's Feather!
            • keke_bear00
              keke_bear00Tuesday, September 18, 2018 at 9:33 am55 stars
              Lean cool thats awesome, congratulations!!
              • loiskwon123
                loiskwon123Monday, September 10, 2018 at 5:22 pm55 stars
                hi leanecool, 100 stars dude
              • applemango
                applemangoFriday, September 7, 2018 at 10:45 pm55 stars
                When Cruz gets in to Explorer Academy he discovers an ancient mystery about his mom! While they go on many missions something is very wrong, the Nebula (a drug company) wants to kill Cruz and they also killed his mom too! Now when Cruz goes on a series of adventures with friends, he finds many clues and discovers beyond what he knows! Now Cruz has a lot of questions, who is the man that keeps following him? What do the Nebula want from him? READ THIS BOOK TO FIND OUT!!!!!
                • tcwgaming
                  tcwgamingWednesday, September 5, 2018 at 12:03 pm
                  this looks cool
                  • belle252
                    belle252Saturday, September 1, 2018 at 5:17 pm55 stars
                    This book is awesome and I am so jealous of Cruz right now, If you are interested in codes and puzzle solving there might not be a better book than this the best part is that it has pictures in it which made it so easy to visualize what was happening and over all i love this book.
                    • readingkendal
                      readingkendalSaturday, August 25, 2018 at 7:41 am55 stars
                      When 12-year-old Cruz Coronado is picked to join Explorer Academy to one day become a scientist everything seems perfect. He and his bunk mate get along, and classes go well, but when he finds someone is out to get him things go from great to weird. Who is out to get him is the question that fills his head. Hidden ciphers and codes, plus adventure and more is packed into this book. Is he safe?, or will he have to leave the academy? Find out in Explorer Academy: The Nebula Secret.
                      • fossilfury
                        fossilfuryTuesday, August 21, 2018 at 1:28 pm55 stars
                        I have read hundreds of books, but this by far one of my favorite books to, and I only have read it once! I would definitely recommend this book to every one!

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