Dive into the world of puzzles and espionage with "I Spy: 4 Picture Riddle Books" from the Scholastic Reader, Level 1 Series. Authored by Jean Marzollo, these books offer a thrilling journey through riddles and mysteries that are perfect for young readers. The collection combines the excitement of detective stories with the fun of picture book format, making it an engaging read for children. Each trade paperback in this set spans 9 inches in length and 6.1 inches in width, with 128 pages of challenges that promise to sharpen focus and boost reading skills. Published in 2005 by Scholastic, Incorporated, these books are a great addition to any early reader's collection. With a lightweight design at just 12.5 ounces, they are easy to carry around for reading on the go.