"Professor Dumbledore, there is still one thing I don't understand," Alistair asked, looking puzzled. "Why do we need Dementors to guard the school this term?"
Dumbledore rested his fingertips together on the desk, his half-moon spectacles failing to conceal the seriousness in his eyes. "Peter Pettigrew has broken out of prison."
"It really is him..." Alistair said without any surprise.
Chapter 167