Books by Margaret Mahy
Attitude: Take Care
Laura, a 14-year-old New Zealander, turns to prefect Sorenson Carlisle - a witch - when her brother is possessed.
Three young boys are left in the charge of a rather piratical babysitter when their parents go out to a business dinner.
8-year-old Barney Palmer is aware that he is being haunted by a small boy, whom he suspects to be the ghost of his great-uncle Cole, supposedly dead these 50 years, and special friend of his great-uncle Barnaby who has just died.