After successfully deciphering the Rongorongo script of Easter Island, Steven Roger Fischer gained a unique place in the pantheon of glyphbreakers: he is the only person to have deciphered not one but two ancient scripts. Both of these scripts yield clues of great historical importance. Fischers previous decipherment, of a Cretan artefact called the Phaistos Disk, provided the key to the ancient Minoan language and showed it to be closely related to Mycenaean Greek. Fischer’s decipherment of Rongorongo shows that it was not merely a mnemonic device for recalling memorised texts, but was actually read and used for creative composition. This is the exciting story of these two decipherments, by the man who now must rank as the greatest glyphbreaker of all time.