"Sign of the Rat" is an adventure novel, featuring a teenage archaeologist. His nickname is "Trouble." Go with Trouble on his dangerous travels. His journey begins in a curio shop in Manhattan and takes him to Paris. His final destination is a secret laboratory lost in the jungles of Vietnam. Exploring fabulous Halong Bay, he discovers the source of a frightening puzzle, the sudden appearance of prehistoric species. On this risky expedition, it isn't easy to know who's on his side. A rich junkyard king, the daughter of a jewel thief and a movie addict bring help and harm. Some of them are enemies, waiting for Trouble to solve the puzzle. Please visit the Learning Center for "Sign of the Rat" on our website - www.SiliconValleyNovel.com In the Learning Center, each of the illustrations has relevant information giving the story cultural, scientific and historical context. Teachers, home-schooling parents and fans of the Trouble adventure series will enjoy exploring the facts behind the story. Filled with intriguing knowledge, the Learning Center brings alive Trouble's world. The questions and answers are also fun for grandparents to share with their grandkids. Trouble's adventures began in the bestselling novel "Everest is Hollow." Like that previous book, "Sign of the Rat" is targeted at Young Adult readers (ages 11 to 15). However, fans as young as 9 years old enjoyed "Everest is Hollow," as did senior citizens. So parents may find "Sign of the Rat" a book they can share with their children. The novel is also designed to be a success with reluctant readers, who express joy when "something happens" in every scene. The Trouble adventure series is part of Silicon Valley Novel's "kids saving kids by reading" project. Proceeds are donated to Doctors Without Borders, winners of the Nobel Prize. Each book sold buys medicine to save a child's life.