"No," replied Salazar Slytherin. "I'm not helping to found a school that will have muggle borns and half-bloods. Did Gryffindor send you?" The Doctor looked at the man with distaste. He patted the Ksilisab's head. "Well, you can just leave after you found it. All we need is for you to found it." The man carefully bottled the potion he was making and then turned back to the Doctor. "Why is it wearing a blindfold?" he asked finally, slipping the bottle into the pocket of his robes. "Because if it looks you in the eye, you die," replied the Doctor. The man's face suddenly became more interested. "Does it obey orders?" he asked casually edging closer. The Doctor pretended to think about it. "Yes, but only if you can speak snake, I mean, not even I can speak snake!"
"It's a deal!" exclaimed Slytherin. "Oh, what's it called?"
"This?" asked the Doctor. "A Basilisk."
"So he just took it?" asked Clara incredulously, as the Doctor maneuvered the TARDIS out of the dungeon. "Yep," he answered, pulling two levers at once. Hermione stepped up. "He probably assumed that you were a powerful wizard, and it was in his interests to do what you said. That's how most wizards work these days."
"Um… Hermione…" interrupted Ron, trembling. "You're going see-through!" Hermione looked down at herself. "What's happening Doctor?" she asked, turning her hands over slowly. "Nothing to worry about," replied the Doctor. "Your time-line is resetting. Changing to cope with the addition of Slytherin house. You'll just live your life out again, with no memory of anything. Or we could've broken time beyond repair, but no matter…"
"What?" shouted Ron, transparent as a pane of glass. The they both vanished, leaving the Doctor and Clara alone in the TARDIS. "So," said the Doctor, "Bournemouth?"
Harry rushed down the hallways of Hogwarts, carrying an armful of books. Ron followed behind him, rushing past first years in an effort to reach their class on time. "Slow down Harry!" panted Ron as he doubled over, clutching his stomach. "What was that about the black dog?" Hermione appeared next to him and rolled her eyes. "Honestly Ronald, if we are late now Professor Snape is going to kill us!" Ron stood up. "When did you get here?" he asked suspiciously, as Harry picked up his pace. "I've been here the whole time!" exclaimed Hermione, quickly tucking her necklace away. "I never was anywhere else." As they ran for the dungeons, Neville Longbottom caught up with them. "Do we have Potions next?" he asked, wheezing as much as Ron. "It's just Malfoy took my books away. Can I borrow yours?" Ron looked at Harry. "Of course!" he replied, generously. They sped past an empty classroom. Hermione stopped for a moment. It almost seemed like there was something missing, something at the back of her mind… She shrugged it off and kept running.