William Wenton and the Lost City

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 series that School Library Journal calls “part Alex Rider, part The 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...