===About the Book=== When their parents go away to Atlanta, Gretchen and Clark have to stay with their Grandparents in Mud Town. Their Grandma and Grandpa are so forgetful that they've gone and left Gretchen and Clark alone for the day -- with a monster locked up stairs!
- Genre: Horror
- Theme(s): Children's
- Author: R. L. Stine
- Publisher: Scholastic Paperbacks
- ISBN: 0439568366
Papercover Release North America Sep 1, 2003