Question 1

Clue 1

Answer

Each string of numbers represents a book...

Question 2

Clue 2

Answer

They are ISBN numbers, to be specific.

Question 3

Solution

Answer

Each title has the name number of letters as are in its ISBN. The marked numbers correspond to those letters in each title.

Question 4

Clue 1

Answer

Each string of numbers represents a book...

Question 5

Clue 2

Answer

They are ISBN numbers, to be specific.

Question 6

Solution

Answer

Each title has the name number of letters as are in its ISBN. The marked numbers correspond to those letters in each title.

Question 7

Clue 1

Answer

This is an Arnold cipher... but what's the key book?

Question 8

Clue 2

Answer

Does this font look familiar?

Question 9

Solution

Answer

The quote from the front of the card with the matching font comes from the key book that will decipher your Arnold cipher.

Question 10

Clue 1

Answer

Each string of numbers represents a book...

Question 11

Clue 2

Answer

They are ISBN numbers, to be specific.

Question 12

Solution

Answer

Each title has the name number of letters as are in its ISBN. The marked numbers correspond to those letters in each title.