ciphers

Eleven-year-old Fish, seeking a way to help his family financially, becomes a reluctant cabin boy on a pirate ship, where he soon makes friends--and enemies--and is asked to help decipher clues that might lead to a legendary treasure.

Steve's lie about liking to break codes comes back to haunt him when Quinn gives him a message to decode, and he must either figure out the code or tell Quinn the truth.

When a new book arrives at the library with a secret code written inside, Derek, with the help of his friends, follows the clues from one novel to the next and makes a discovery that may help him get past a terrible loss.

While preparing for a fund-raiser antique show, Trixie and the other members of the Bob-Whites discover a secret code in the pages of an old magazine in the attic.

Learn to create secret codes using symbols, dots, lines, rearranged letters and more.

Presents several easy codes with messages to decode and directions for making and writing with invisible ink and devising one's own code.

Examines a number of different ways of writing secret messages, including invisible ink and a variety of ciphers. Gives suggestions and aids for code-breaking.

Presents a variety of codes and ciphers and includes messages to encode and decode, nearly all of which are part of a story.

At the reading of their grandmother's will, Dan and Amy Cahill are given the choice of receiving a million dollars or uncovering the 39 clues hidden around the world that will lead to the source of the family's power, but by taking on the clues, they end up in a dangerous race against their own family members.

Trying to solve coded messages leads the Critter Kids to a new member for their club.