This volume in Simon Shuker's challenging Code-Cracker series returns with another 125 puzzles to keep you busy. An additional "hint letter" is included for each puzzle at the start of the solution pages, for those occasions where you find it hard to get started. Happy puzzling! Shipping: $8 per book. We are happy to combine shipping for multiple purchases, but this may increase the shipping price - please ask us for a quote before purchasing.