Dan and Dave Marzollo have been a part of the I Spy family for years, helping their mother, Jean, create riddles for the I Spy challengers, readers, and board books. Over 30 years ago, they tested the first I Spy book as kids, and are thrilled to be continuing the legacy. Dave lives in Cold Spring, New York, with his wife Melia and their children Gabriel and Westley.

Walter Wick is the photographer of the international bestselling I Spy series as well as the author and photographer of the acclaimed Can You See What I See? series. He lives with his wife, Linda, in Miami, Florida.

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