Good picture riddle book
The I Spy books are a play on the children's game of "I Spy" a game I played often during long car trips except that each book is themed. I Spy Mystery centers around buried treasure, a sunken ship and some other shenanigans. Most of the items photographed are miniatures and toys though what is often being sought in the riddles isn't as obvious as the photograph would first imply. The photographs themselves are deceptively simplistic. A photograph of a green house would appear to be nothing but flowers but may in fact hide things like anchors or race cars.I Spy Mystery seems to be a tougher book than I Spy Spooky Night. I've read the book now twice and still haven't found all the mentioned items!