If you really want to relax try a new kind of coloring book (one color coloring book). Just relax, take pen, marker or pencil start to color between the lines and look how the pictures coming into focus! When you finish look a little closer and you'll see your masterpiece take a shape! No extra skills. So fun and easy to color! This coloring book has a therapeutic effect and relieves stress. - 3 types of graphic puzzles lines, dots and spirals (Thomas Pavitte style) - different levels of difficulty - 35 serial killers hidden by lines, dots and spirals - 4 two sided illustrations - each image is printed on a separate page to prevent bleed-through - highly addictive! - great fun quaranteed!.