The Ghost in the Bell Tower — Francine Pascal

When the Wakefield kids are invited to their aunt  Helen's country inn, Steven and Jessica are  determined to use the eerie old mansion to scare their  sister, Elizabeth, into believing in ghosts. But no  matter what Steve and Jessica do, logical  Elizabeth always figures out their tricks.

Thn  things start happening that even Elizabeth can't  explain, and all the Wakefield kids are afraid that  the inn really is haunted. Will they make it  through the summer sharing their vacation with an  unfriendly ghost?