Stine, R. L. When good ghouls go bad : a book / R.L. Stine ; based on the screenplay by Patrick Read Johnson. - 1st Avon edition. - New York : Avon Books, c2001. - 129 p. : col. ill. ; 20 cm. ISBN: 006441082X (pbk.) LCCN: 2001117190 Index Terms--Genre/Form: Radio and television novels.Horror fiction. Dewey Class. No.: 813.6 / STI