Here's Tyrese's story:
Let me tell you about what happened last night...
I saw our teacher, a pale, thin, corpse-like man creeping round the churchyard looking furtive in a cloak. He sat upon a gravestone and he mumbled, "Let me see... to change into a bat one simply murmurs one, two three."
I saw a purple glimmer and I heard a muffled bang and, just before he vansihed, a glimpse of gleaming fang. Then, fluttering round the gravestone where Mr Meek had sat, was a rather thin example of a vampire bat!
The next morning, in the classroom, Mr Meek looked plump and pink.
Today, I think I may buy a garlic and a crucifix.