Justin is a huge fan of Halloween, and it's the first one that his Mom is allowing him to wear a cool costume: a Clone Trooper. Unfortunately, he can't seem to stay out of trouble, and his parents have threatened to keep him home while the other kids go trick-or-treat if he can't get his act together. His teacher took away his recess for the entire month, and he's been grounded every weekend. If that's not bad enough, the rest of the classes at school are busy planning fun parties and activities, and his teacher has him doing research!His troubles started when he accidentally let the class pet, Myrtle the mouse, loose in the classroom. The Myrtle situation created loads of other problems at school and may even ruin what should be the best Halloween ever. Will be able to be able to go trick-or-treating? Can he help find the Myrtle the mouse? Will it be the worst Halloween ever? Find out in the latest installment of the School Is A Nightmare Series, Shocktober!