Other editions of book Class 9 and the Monsters from the Portal of Doom: A comedy adventure for kids

Class 9 would like to have some fun, after all they've spent most of the school year fighting monsters from Outer Space and then from under the sea. What better than the Halloween Disco where the beasts are only pretend. (Or are they!!??) Paint your face, put on your scary outfits and head down to Pinkerton Primary School. “The Monster Mash” is about to play!!