Spy X : the code

In this thrilling mystery series, 12-year-old twins Andrew and Evie navigate through a maze of intrigue and espionage as they try to uncover the truth about their mother's disappearance. Leaving only a cryptic note, Andrew and Evie's mother vanishes on their eleventh birthday. Now, almost a year later, the twins receive a mysterious package from someone named Spy X. They soon learn that the contents of the box will lead them on an incredible journey toward finding their mother - and into a world where no one's identity can be trusted. In Book #1, Andrew and Evie aren't initially sure what to make of the package that arrives at their door soon after they move to a new town. It's filled with random things--a key, something that looks like a kaleidoscope, (continued) Leaving only a cryptic note, Andrew and Evie's mother vanishes on their eleventh birthday. Now, almost a year later, the twins receive a mysterious package that will lead them on an incredible journey toward finding their mother. They can rely only on each other and Spy X.