Lupin let go of Black and turned to her. She had raised herself off the floor and was pointing at Lupin, wild eyed.
“You—you—”
“Hermione—”
“—you and him!”
“Hermione, calm down—”
“I didn’t tell anyone!” Hermione shrieked. “I’ve been covering up for you—”
“Hermione, listen to me, please!” Lupin shouted. “I can explain—”
Harry could feel himself shaking, not with fear, but with a fresh wave of fury.
“I trusted you,” he shouted at Lupin, his voice wavering, out of control, “and all the time you’ve been his friend!”
“You’re wrong,” said Lupin. “I haven’t been Sirius’s friend, but I am now—Let me explain…”
“NO!” Hermione screamed. “Harry, don’t trust him, he’s been helping Black get into the castle, he wants you dead too—he’s a werewolf!”
There was a ringing silence. Everyone’s eyes were now on Lupin, who looked remarkably calm, though rather pale.
“Not at all up to your usual standard, Hermione,” he said. “Only one out of three, I’m afraid. I have not been helping Sirius get into the castle and I certainly don’t want Harry dead.” An odd shiver passed over his face. “But I won’t deny that I am a werewolf.”
Ron made a valiant effort to get up again but fell back with a whimper of pain. Lupin made toward him, looking concerned, but Ron gasped, “Get away from me, werewolf!”
Lupin stopped dead. Then, with an obvious effort, he turned to Hermione and said, “How long have you known?”
“Ages,” Hermione whispered. “Since I did Professor Snape’s essay…”
“He’ll be delighted,” said Lupin coolly. “He assigned that essay hoping someone would realize what my symptoms meant… Did you check the lunar chart and realize that I was always ill at the full moon? Or did you realize that the Boggart changed into the moon when it saw me?”
“Both,” Hermione said quietly.
Lupin forced a laugh.
“You’re the cleverest witch of your age I’ve ever met, Hermione.”
“I’m not,” Hermione whispered. “If I’d been a bit cleverer, I’d have told everyone what you are!”
“But they already know,” said Lupin. “At least, the staff do.”
“Dumbledore hired you when he knew you were a werewolf!” Ron gasped. “Is he mad?”
“Some of the staff thought so,” said Lupin. “He had to work very hard to convince certain teachers that I’m trustworthy—”
“AND HE WAS WRONG!” Harry yelled. “YOU’VE BEEN HELPING HIM ALL THE TIME!” He was pointing at Black, who suddenly crossed to the four poster bed and sank onto it, his face hidden in one shaking hand. Crookshanks leapt up beside him and stepped onto his lap, purring. Ron edged away from both of them, dragging his leg.
“I have not been helping Sirius,” said Lupin. “If you’ll give me a chance, I’ll explain. Look—”
He separated Harry’s, Ron’s and Hermione’s wands and threw each back to its owner; Harry caught his, stunned.
“There,” said Lupin, sticking his own wand back into his belt. “You’re armed, we’re not. Now will you listen?”