Hint 1: Use the lines and dots in the book and poster
Hint 2: Overlap the lines and dots in the book and poster on top of each other
Hint 3: Use the key from the book and poster to crack the code, remembering to go forwards you first must go back
Hint 1: Use the lines and dots in the book and poster
Hint 2: Overlap the lines and dots in the book and poster on top of each other
Hint 3: Use the key from the book and poster to crack the code, remembering to go forwards you first must go back