Stanley DeCapers and his class are on a field trip to the Anasazi ruins in Colorado. Stanley is determined to solve the mystery of the vanishing Anasazi. With a friend's help, he manages to slip away from the group and strike out on his own to search for clues. He meets a mysterious security guard who helps him learn about how the Anasazi left these dwellings to move to a different area. When Stanley asks why they moved, the guard tells him that there are some mysteries the sky will never reveal.

Additional Resources
ReadingA-Z.com Printable and Projectable Book
VocabularyA-Z.com Lesson