Puzzeled you follow Barbara's directions, but when you pull on the
book the bookcase slides away revealing...
"you must follow the corridor down to the library.Then pull the
book titled The Sorcerer's Stone. It's on the third bookshelf, in the
fifth row.,"Barbara whispers as if someone else was
following,"You then mustfollow the path behind the bookcase where
you will find the mouse.I can't say more."