The Super-Secret Mission to the Center of the Moon (Pie)In the second book in Melissa de la Cruz's wacky new middle grade adventure series, the Octos find themselves on a mission to the moon. Which might not be made out of cheese after all. In the second book in Melissa de la Cruz's wacky new middle grade adventure series, the Octos find themselves on a mission to the moon. Which might not be made out of cheese after all. After discovering in book one that they had every reason to feel a little bit