Explorer Academy: The Double Helix (Book 3)

The Double Helix is a thrilling adventure that continues the exciting journey of 12-year-old Cruz Coronado and his friends in the Explorer Academy series.

With a mysterious new professor taking over, Cruz and his pals must navigate ancient ruins in Petra, Jordan, while searching for another piece of the puzzle left behind by Cruz's mother.

But things take a dangerous turn when Cruz's father goes missing, prompting Aunt Marisol to leave the ship in search of him.

As the clock ticks down to Cruz's 13th birthday, Nebula is determined to stop him at all costs.

Will Cruz be able to uncover the truth and save his father before it's too late? Find out in this action-packed and suspenseful installment of the Explorer Academy series.