At eight o'clock on Saturday evening, Alistair asked the duel team members for leave in advance, then hugged the black-and-white book and knocked on the door of the Potions Office.
In less than half a minute, Snape opened the door of the Potions Office with a heavy expression.
He looked down at the book in Alistair's arms and asked, "Did you bring that book?"
Chapter 457