Good book. Things Not Seen is a novel written by bestselling author Andrew Clements. Things Not Seen is about a 15-year-old boy, Bobby Phillips. One night, Bobby goes to bed snuggling under his electric blanket in his Chicago home. He wakes up the next morning as an invisible person. Bobby tells his parents that he is invisible right away. His mom, a literature professor and his dad, a physicist, both try to figure out how this could have happened to their son, but have no clue where to start searching for the solution to what seems like an impossible problem.