MINT
Each book decrypts one group of 8 documents, out of 12 groups in the story. Every cover is unique, but two books can hold the same group, so a new book won't always decrypt new documents.
Each book decrypts one group of 8 documents, out of 12 groups in the story. Every cover is unique, but two books can hold the same group, so a new book won't always decrypt new documents.