Karen's ghost /
Ann M. Martin ; illustrations by Heather Burns.
- 97 pages : illustrations ; 20 cm.
- Baby-sitters little sister ; #12. .
- Martin, Ann M., 1955- Baby-sitters little sister ; #12. .
"This book was originally published in paperback by Scholastic Inc. in 1990"--Title page verso.
There is a ghost in Karen's house. Now Ben and his friends are going to have a Halloween party in her attic!