Karen's Ghost (Baby-Sitters Little Sister #12) in Bloomington, MN

It's fun to be a Baby-sitters' Little Sister!
Karen thinks there's a ghost in her house! But she's never really
seen
the ghost of Old Ben Brewer — until now.
Karen and her stepsister Kristy have found out that Ben Brewer and his spooky friends are going to have a birthday party in
her
attic on
Halloween night
! It used to be fun having a ghost around. But now Karen's not so sure!