The mystery deepens and the action intensifies for 12-year-old Cruz Coronado and friends in the exciting third book in the Explorer Academy series.

The adventure continues for Cruz, Emmett, Sailor, and Bryndis as they continue their studies at sea and travel to exotic locations around the world. A mysterious person alerts Cruz to impending danger while he and a few trusted pals explore ancient ruins in Petra, Jordan, and search for another piece of the puzzle his mother left behind. Worst of all, now his father has gone missing, which prompts Aunt Marisol, his number one protector, to leave the ship in search of him. Who is the new professor who takes her place? How does the new technology he introduces help or hurt Cruz's quest? Why is Nebula determined to stop Cruz before he turns 13? The clock is ticking as his first teen birthday draws near ... a milestone that will change his life forever, one way or another.

Hardcover, 216 pages
Published on September 24, 2019 by Under the Stars
ISBN-10: 1426334583
ISBN-13: 9781426334580
4 Book Reviews
  • Amelia hall 9 months
    it is amazing 🐤🐤🐤
    • phantasticgus
      phantasticgusabout 1 year44 stars
      Great book! Very engaging, and simply impossible to put down. Cruz and his friends Emmett, Sailor, and Bryndis search for hidden secrets—and answers—in this book, as they travel around the world. After learning that a terrible medicine company called Nebula killed Cruz’s mother, these four young explorers must search for clues about her death. Before dying, she hid eight pieces of a cipher all over the world , so her son would know what formula she was working on in her lab. Can they find the cipher...before it’s too late? Read this book to find out!
      • Beanalmost 2 years
        It is amazing!!!!!
        • Elin PKife almost 2 years
          Omg I'm a little girl who's father is a book reader so since my father is a book reader I think this book is awesome ❤❤🤩this is a five star book.