There was another pause in which Crookshanks, mewing, attempted to paw Sirius’s head, and Ron fiddled with a hole in the hearthrug.
“So, you want me to say I’m not going to take part in the Defence group?” he muttered finally.
“Me? Certainly not!” said Sirius, looking surprised. “I think it’s an excellent idea!”
“You do?” said Harry, his heart lifting.
“Of course I do!” said Sirius. “D’you think your father and I would’ve lain down and taken orders from an old hag like Umbridge?”
“But—last term all you did was tell me to be careful and not take risks—”
“Last year, all the evidence was that someone inside Hogwarts was trying to kill you, Harry!” said Sirius impatiently. “This year, we know there’s someone outside Hogwarts who’d like to kill us all, so I think learning to defend yourselves properly is a very good idea!”
“And if we do get expelled?” Hermione asked, a quizzical look on her face.
“Hermione, this whole thing was your idea!” said Harry, staring at her.
“I know it was. I just wondered what Sirius thought,” she said, shrugging.
“Well, better expelled and able to defend yourselves than sitting safely in school without a clue,” said Sirius.
“Hear, hear,” said Harry and Ron enthusiastically.
“So,” said Sirius, “how are you organising this group? Where are you meeting?”
“Well, that’s a bit of a problem now,” said Harry. “Dunno where we’re going to be able to go.”
“How about the Shrieking Shack?” suggested Sirius.
“Hey, that’s an idea!” said Ron excitedly, but Hermione made a sceptical noise and all three of them looked at her, Sirius’s head turning in the flames.
“Well, Sirius, it’s just that there were only four of you meeting in the Shrieking Shack when you were at school,” said Hermione, “and all of you could transform into animals and I suppose you could all have squeezed under a single Invisibility Cloak if you’d wanted to. But there are twenty-eight of us and none of us is an Animagus, so we wouldn’t need so much an Invisibility Cloak as an Invisibility Marquee—”
“Fair point,” said Sirius, looking slightly crestfallen. “Well, I’m sure you’ll come up with somewhere. There used to be a pretty roomy secret passageway behind that big mirror on the fourth floor, you might have enough space to practise jinxes in there.”
“Fred and George told me it’s blocked,” said Harry, shaking his head. “Caved in or something.”
“Oh…” said Sirius, frowning. “Well, I’ll have a think and get back to—”
He broke off. His face was suddenly tense, alarmed. He turned sideways, apparently looking into the solid brick wall of the fireplace.
“Sirius?” said Harry anxiously.
But he had vanished. Harry gaped at the flames for a moment, then turned to look at Ron and Hermione.
“Why did he—?”
Hermione gave a horrified gasp and leapt to her feet, still staring at the fire.