Mitchell. Julie

After the meanest kid in the fifth grade destroys his speech for the school competition, Dunn finds a magic brain which causes surprising things to happen.

"Strange things have been happening in Pompeii. Tremors have been rocking the countryside, ash has been falling from the sky, animals have been behaving strangely. Marcus is worried that something terrible is about to happen. And one day, he is proven right."--OCLC.

Bull Harris is the meanest kid in seventh grade. And I bumped into him on the way home from school! Pinned to the bridge railing by Bull's friends, I watched helplessly as Bull hurled my backpack with my speech in it for the school cometition, far into the murky Sorrow Creek. How will I win the competition now? Will I rat on the meanest kid in seventh grade and risk becoming mincemeat.