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...

Siblings Amy and Dan must find another way to outwit the Vespers when they target and kidnap Dan's only friend, eleven-year-old Atticus.

"The Select tells the story of thirteen-year-old Burt Wenders, the first documented carrier of the G7W gene, and his fated voyage to the island that would eventually become home to the Karai Institute. Burt's account reveals his heroic efforts to navigate serpent-infested waters, save his father, and find a cure for the illness that curses him"--P. [4] of cover. "The Orphan tells the story of Daria, a twelve-year-old orphan abandoned among the Babylonians....

"The Vespers have crossed a line. Amy and Dan were devastated when the Vespers kidnapped seven Cahills around the world, holding them hostage until Amy and Dan delivered an impossible ransom. But at least the hostages were Cahills - members of the world's most powerful family, trained to face all odds. Now the Vespers have gone too far. They've kidnapped Atticus, an innocent 11 year old boy and Dan's only friend. Now Dan and Amy are in the struggle...

When Quincy opens the Abracadabra Club's new magic chest, he unwraps a strange-looking statue with one glowing red eye. It also rattles when it's shaken. Turns out this treasure has its own secret inside. If the club finds the statue's other eye, its secret may be unlocked.

Twins Andrew and Evie search for their mother, a secret agent hiding from the Company, by solving the clues she has left for them in San Francisco, while trying to avoid the Company's agents, who hope the children will lead them to her.

Describes how modern technology harnesses the power of wind and the sun to convert into electricity, helping to create alternative sources of energy, and lists the advantages and disadvantages to both methods.

The adventures of Jack McKinley and his friends as they face their greatest challenge yet: the long-lost Statue of Zeus. In their struggle to undo what's been done and unlock the secrets of this Wonder of the Ancient World, the heroes must confront gods, relive old battles, and face down their own destiny to save themselves, and the world, from destruction.