That's over by the alligator. Does this look familiar? These photos are from the "I Spy" book series, introduced in 1992, and there's a good chance that either you or your kids have read them.

A Book of Picture Riddles by Jean Marzollo. The volume includes a stunning spread of ""Odds and Ends"" (from the original I Spy) Jean Marzollo, Author, Walter Wick, Author, Walter Wick ...

Who doesn’t love thrilling adventures with spies? Check out these spy books for kids because there’s a good chance you’ll find LOTS of great book ideas to keep your readers reading for days.