Will Solvit is a regular ten year old - or so he thought. With the help of his dad''s crazy inventions, Will finds himself with a trail of secret letters to decode and some scary cannibal cavemen on his tail! Featuring cool facts, easy to read text, and a whole lot of mysteries to solve, Will Solvit makes a great companion for middle readers ages 6-11. This is the fifth book in the Will Solvit Series - be sure to check out all 12 adventures!