Welcome to the website of Samos Books. We are a fledgeling Scottish publishing company specialising in historical astro-navigational subjects and have taken our name from the Greek island birthplace of two of the finest navigators / astronomers of the ancient world :- Pythagoras (circa 572-475BC) and Aristarchus (circa 310-230BC). The website contains methods of solving two of the world's most famous cryptographic puzzles, a £10,000 prize competition and new insights into the Zodiac Killer's Letters.