Will Solvit is about to take on his most important and dangerous mission yet. On a journey to the end of the world, he discovers some of the answers he's been looking for. With the help of the people he's encountered on his earlier adventures, Will tries to save his father... and the whole world. 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 twelfth book in the Will Solvit Series - be sure to check out all 12 adventures!