Book Series · 28 Books
In order from I Spy: A Book of Picture Riddles to I Spy Treasure Hunt.
The I Spy series is a set of 28 picture books by Jean Marzollo, published between 1992 and 2026. Written for ages 0–9, most books run about 35 pages.
Solve riddles and uncover hidden objects in captivating photos.
28 books · Published 1992–2026
Solve riddles and uncover hidden objects in captivating photos.
Uncover hidden holiday treasures in a festive search-and-find adventure.
Solve riddles and uncover hidden objects in a thrilling search-and-find adventure.
Solve riddles and uncover secrets in a world of hidden objects.
Solve riddles and uncover hidden objects in captivating photos.
Solve riddles and find hidden objects in mesmerizing scenes.
Solve riddles and find hidden treasures in captivating photos.
Uncover hidden riddles in a new I Spy challenge.
Can you spot the hidden treasures in these captivating photo puzzles?
Can you spot every hidden object in these challenging riddles and photos?
Solve riddles and uncover hidden objects in captivating photos.
Uncover hidden treasures and letters in a playful search-and-find adventure.
Can you solve the toughest I Spy riddles yet?
Uncover hidden objects in challenging riddles and mesmerizing photos.
Solve riddles and find hidden treasures in captivating photos.
Solve riddles and find hidden objects in captivating photos.
Embark on a festive search-and-find adventure this Christmas.
Search for hidden treasures in a springtime adventure.
Uncover hidden treasures in a captivating search-and-find adventure.
Solve riddles and find hidden treasures in captivating photos.
Search for hidden animals in a playful picture puzzle adventure.
Search and find letters in a playful alphabet adventure.
Search for hidden numbers in a playful counting adventure.
Search for festive treasures in a Christmas-themed I Spy adventure.
Search for hidden hearts and love symbols in a captivating puzzle adventure.
Search for trucks and trains in a fun-filled, interactive adventure.
Search for hidden sports objects in a playful, interactive adventure.
Uncover hidden treasures and solve riddles in a time-traveling search from pirate ships to modern shores.
There are 28 books in the I Spy series. It began with I Spy: A Book of Picture Riddles in 1992, and the newest book, I Spy Treasure Hunt, was published in 2026.
The series is best for ages 0–9, based on the age ranges of the individual books.
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