Nothing to see here, move along, folks! said the officer with an exploding fireworks factory behind him. The biggest secrets are hidden where nothing seems to happen; the silk-screen printing on this cover is temperature sensitive and changes its color with heat. You've got to hold this book in your own hands to know what's going on. And maybe you will discover a little surprise. A5; 16.5 × 22 cm. 256 pages. 120 g premium paper. Smooth recycled leather for the cover. A5; 16.5 × 22 cm. Thread stitching, perfect lay-flat behavior.