Hermione screamed. Black leapt to his feet. Rose felt as though she'd received a huge electric shock.
"I found this at the base of the Whomping Willow," said Snape, throwing the cloak aside, careful to keep this wand pointing directly at Lupin's chest. "Very useful, Potter, I thank you..."
Ew, does that mean it's been on his head?
Snape was slightly breathless, but his face was full of suppressed triumph. "You're wondering,perhaps, how I knew you were here?" he said, his eyes glittering. "I've just been to your office, Lupin. You forgot to take your potion tonight, so I took a gobletful along. And very lucky I did... lucky for me, I mean. Lying on your desk was a certain map. One glance at it told me all I needed to know. I saw you running along this passageway and out of sight."
"Severus —" Lupin began, but Snape overrode him.
"I've told the headmaster again and again that you're helping your old friend Black into the castle, Lupin, and here's the proof. Not even I dreamed you would have the nerve to use this old place as your hideout —"
"Severus, you're making a mistake," said Lupin urgently. "You haven't heard everything — I can explain — Sirius is not here to kill Harry —"
"Two more for Azkaban tonight," Snape interrupted him again, his eyes now gleaming fanatically. "I shall be interested to see how Dumbledore takes this... He was quite convinced you were harmless, you know, Lupin... a tame werewolf —"
"You fool," Lupin sighed quietly. "Is a schoolboy grudge worth putting an innocent man back inside Azkaban?"
BANG! Thin, snakelike cords burst from the end of Snape's wand and twisted themselves around Lupin's mouth, wrists, and ankles; he overbalanced and fell to the floor, unable to move.With a roar of rage, Black started toward Snape, but Snape pointed his wand straight between Black's eyes.
"Give me a reason," he whispered. "Give me a reason to do it, and I swear I will."
"Don't be a fool, Severus,"
"He can't help it. It's habit by now." Black interrupted Professor Lupin, not taking his eyes off Snape.
