‘Have you read ‘The Da Vinci Code’?” a friend asked me recently about the runaway best seller. “No,” I said. “Is it any good?” “It’s only the worst novel I’ve ever read ...

Episodes 1-6 of Gravity Falls use the Ceasar cipher, 7-13 use the Atbash cipher, and 14-19 use the A1Z26 cipher. ... All of ...

Episodes 1-6 use the Caeser cipher. In Tourist Trapped, the codes reads "ZHOFRPH WR JUDYLWB IDOOV", which in Caesar cipher means "Welcome to Gravity Falls".