The biggest secrets are hidden where nothing seems to happen; the silk-screen printing on this cover is temperature sensitive and changes its colour 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'.

Size 
H: 22 cm; w: 16.5 cm; h: 2.1 cm.
Materials Smooth bonded cover, with 120 g premium paper and thread-stitched for lay-flat use. 256 pages.

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