William Wenton is a code-breaking genius, but when his secret talent is suddenly revealed, he has to face the danger that has been lurking around him for years in the third book in the William Wenton series that School Library Journal calls "part Alex Rider, part Da Vinci Code for kids, and part Artemis Fowl." When a mysterious figure presents William with a strange pyramid-shaped puzzle, it sets in motion a series of events that sends William on a wild ride from Norway to England to the Mariana Trench, the deepest part of the ocean. Along the way, he'll discover that some of the people he knew can no longer be trusted and that the Institute for Post-Human Research is hiding a dark secret. He'll also discover an ancient civilization hidden under the ocean and a giant, mechanical, teleportation octopus. And all the while the clock is ticking as William races to prevent the return of the man who wants to kill him and tries to solve the mystery of luridium.
by Bobbie Peers
by Ian Doescher
by Zilpha Keatley Snyder
by Bobbie Pyron
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