===About the Book=== While staying at his Aunt Kathryn's, Evan is forbidden to enter one of the rooms. But he just to find out what's behind that door! So one day he takes a look - and discovers an old, dusty can of "Monster blood" that's starting to grow and has one heck of an appetite!
- Genre: Horror
- Theme(s): Children's
- Author: R. L. Stine
- Publisher: Scholastic Paperbacks
- ISBN: 0439568390
Papercover Release North America Sep 1, 2003