Cryptograms Declassified

Every cryptogram in this book hides a true story, and most of them are odd. There are 100 in all: forgotten feats from history, animals cleverer than they have any right to be, strange customs from around the world, and a few mysteries nobody has solved.

The puzzles are printed large and illustrated, with full solutions at the back for when a code won't give way.

It's a standalone book, so you can start anywhere. A good gift for puzzlers who like a strange-but-true tale.