Discover a thrilling I SPY adventure hidden in a mysterious old house! A clever skeleton traps you inside his spooky mansion with a challenge to find his secret way out. In first-person play, explore each room of the house to reveal its 33 I SPY riddles. Solve I SPY riddles, earn clues and play brain-teasing game to uncover the mansion's secret escape! The I Spy Book Series is celebrating its 20th Anniversary in 2011. I Spy Books are published by SCHOLASTIC, a highly trusted brand among parents and educators worldwide. The I Spy Picture Books are very popular with kids and are based on rhyming riddles and finding/matching the corresponding images in the picture. The I Spy Books are fun, educational, activity-oriented, and help develop early learning skills (reading, visual discrimination, cognitive thinking, spatial relationships, hand to eye coordination, and interactive play).