My Headteacher is a Vampire Rat

Izzy and her friends are SHOCKED when they meet their new headteacher. He has black hair, wears a cape and has funny, wormy lips. One time, they even hear him hissing in his office, and sunlight makes him go bright red!

But it's when he bans garlic bread on Italian Day that they KNOW. Their new headteacher is a VAMPIRE and his army of vampire rats are going to take over the school! EEEK!!