Lots of little brothers can be pests and trouble-makers--but Amys brother Arnie is a MONSTER ... In this R.L. Stine middle-grade scare fest, Amy and her friend, Lissa, dont know what to do about Arnies bullying, bad-boy behavior, and mean jokes and pranks. The little monster is ruining their lives! The girls decide its payback time. Total humiliation for Arnie. They find a recipe for green slime on a YouTube channel and mix a big bucket to pour over Arnie at his birthday party. To their horror, the girls instantly discover that SLIME DOESNT PAY. Before their eyes, Arnies whole body starts to change. The slime turns him into a real monster. Now Amy and Lissa have two frightening dilemmas: Can they save their town from the raging Arnie Monster? And is there any way to turn the monster back into Arnie?
