A roar of approval met these words and a dun-coloured centaur shouted, 'They can join the woman!'

'You said you didn't hurt the innocent!' shouted Hermione, real tears sliding down her face now. 'We haven't done anything to hurt you, we haven't used wands or threats, we just want to go back to school, please let us go back — '

'We are not all like the traitor Firenze, human girl!' shouted the grey centaur, to more neighing roars of approval from his fellows. 'Perhaps you thought us pretty talking horses? We are an ancient people who will not stand wizard invasions and insults! We do not recognise your laws, we do not acknowledge your superiority, we are — '

But they did not hear what else centaurs were, for at that moment there came a crashing noise on the edge of the clearing so loud that all of them, Harry, Hermione and the fifty or so centaurs filling the clearing, looked around. Harry's centaur let him fall to the ground again as his hands flew to his bow and quiver of arrows. Hermione had been dropped, too, and Harry hurried towards her as two thick tree trunks parted ominously and the monstrous form of Grawp the giant appeared in the gap.

The centaurs nearest him backed into those behind; the clearing was now a forest of bows and arrows waiting to be fired, all pointing upwards at the enormous greyish face now looming over them from just beneath the thick canopy of branches. Grawp's lopsided mouth was gaping stupidly; they could see his bricklike yellow teeth glimmering in the half-light, his dull sludge-coloured eyes narrowed as he squinted down at the creatures at his feet. Broken ropes trailed from both ankles.

He opened his mouth even wider.

'Hagger.'

Harry did not know what 'hagger' meant, or what language it was from, nor did he much care; he was watching Grawp's feet, which were almost as long as Harry's whole body. Hermione gripped his arm tightly; the centaurs were quite silent, staring up at the giant, whose huge, round head moved from side to side as he continued to peer amongst them as though looking for something he had dropped.

'Hagger! ' he said again, more insistently.

'Get away from here, giant!' called Magorian. 'You are not welcome among us!'

These words seemed to make no impression whatsoever on Grawp. He stooped a little (the centaurs' arms tensed on their bows), then bellowed, 'HAGGER!'

A few of the centaurs looked worried now. Hermione, however, gave a gasp.

'Harry!' she whispered. 'I think he's trying to say "Hagrid"!'

At this precise moment Grawp caught sight of them, the only two humans in a sea of centaurs. He lowered his head another foot or so, staring intently at them. Harry could feel Hermione shaking as Grawp opened his mouth wide again and said, in a deep, rumbling voice, 'Hermy.'

'Goodness,' said Hermione, gripping Harry's arm so tightly it was growing numb and looking as though she was about to faint, 'he — he remembered!'

'HERMY!' roared Grawp. 'WHERE HAGGER?'

'I don't know!' squealed Hermione, terrified. 'I'm sorry, Grawp, I don't know!'

'GRAWP WANT HAGGER!'

One of the giants massive hands reached down. Hermione let out a real scream, ran a few steps backwards and fell over. Devoid of a wand, Harry braced himself to punch, kick, bite or whatever else it took as the hand swooped towards him and knocked a snow-white centaur off his legs.

It was what the centaurs had been waiting for — Grawp's outstretched fingers were a foot from Harry when fifty arrows soared through the air at the giant, peppering his enormous face, causing him to howl with pain and rage and straighten up, rubbing his face with his enormous hands, breaking off the arrow shafts but forcing the arrowheads in still deeper.

He yelled and stamped his enormous feet and the centaur; scattered out of the way; pebble-sized droplets of Grawp's blood showered Harry as he pulled Hermione to her feet and the pair of them ran as fast as they could for the shelter of the trees. Once there they looked back; Grawp was snatching blindly at the centaurs as blood ran down his face; they were retreating in disorder, galloping away through the trees on the other side of the clearing. Harry and Hermione watched Grawp give another roar of fury and plunge after them, smashing more trees aside as he went.

'Oh no,' said Hermione, quaking so badly that her knees gave way. 'Oh, that was horrible. And he might kill them all.'

'I'm not that fussed, to be honest,' said Harry bitterly.

The sounds of the galloping centaurs and the blundering giant grew fainter and fainter. As Harry listened to them, his scar gave another great throb and a wave of terror swept over him.

They had wasted so much time — they were even further from rescuing Sirius than they had been when he had had the vision. Not only had Harry managed to lose his wand but they were stuck in the middle of the Forbidden Forest with no means of transport whatsoever.

'Smart plan,' he spat at Hermione, having to release some of his fury. 'Really smart plan. Where do we go from here?'

'We need to get back up to the castle,' said Hermione faintly.

'By the time we've done that, Sirius'll probably be dead!' said Harry, kicking a nearby tree in temper. A high-pitched chattering started up overhead and he looked up to see an angry Bowtruckle flexing its long twiglike fingers at him.

'Well, we can't do anything without wands,' said Hermione hopelessly, dragging herself up again. 'Anyway, Harry, how exactly were you planning to get all the way to London?'

'Yeah, we were just wondering that.' said a familiar voice from behind her.

Harry and Hermione moved together instinctively and peered through the trees.

Ron came into sight, closely followed by Ginny, Neville and Luna. All of them looked a little the worse for wear — there were several long scratches running the length of Ginny's cheek; a large purple lump was swelling above Neville's right eye; Ron's lip was bleeding worse than ever — but all were looking rather pleased with themselves.

'So,' said Ron, pushing aside a low-hanging branch and holding out Harry's wand, 'had any ideas?'

'How did you get away?' asked Harry in amazement, taking his wand from Ron.

'Couple of Stunners, a Disarming Charm, Neville brought off a really nice little Impediment Jinx,' said Ron airily, now handing back Hermione's wand, too. 'But Ginny was best, she got Malfoy — Bat Bogey Hex — it was superb, his whole face was covered in the great flapping things. Anyway, we saw you out of the window heading into the Forest and followed. What've you done with Umbridge?'

'She got carried away,' said Harry. 'By a herd of centaurs.'

'And they left you behind?' asked Ginny, looking astonished.

'No, they got chased off by Grawp,' said Harry.

'Who's Grawp?' Luna asked interestedly.

'Hagrid's little brother,' said Ron promptly. 'Anyway, never mind that now. Harry, what did you find out in the fire? Has You-Know-Who got Sirius or — ?'

'Yes,' said Harry, as his scar gave another painful prickle, 'and I'm sure Sirius is still alive, but I can't see how we're going to get there to help him.'

They all fell silent, looking rather scared; the problem facing them seemed insurmountable.

'Well, we'll have to fly, won't we?' said Luna, in the closest thing to a matter-of-fact voice Harry had ever heard her use.

'OK,' said Harry irritably, rounding on her. 'First of all, "we" aren't doing anything if you're including yourself in that, and second of all, Ron's me only one with a broomstick that isn't being guarded by a security troll, so — '

'I've got a broom!' said Ginny.

'Yeah, but you're not coming,' said Ron angrily.

'Excuse me, but I care what happens to Sirius as much as you do!' said Ginny, her jaw set so that her resemblance to Fred and George was suddenly striking.

'You're too — ' Harry began, but Ginny said fiercely, 'I'm three years older than you were when you fought You-Know-Who over the Philosophers Stone, and it's because of me that Malfoy's stuck back in Umbridge's office with giant flying bogies attacking him — '

'Yeah, but — '

'We were all in the DA together,' said Neville quietly. 'It was all supposed to be about fighting You-Know-Who, wasn't it? And this is the first chance we've had to do something real — or was that all just a game or something?'

'No — of course it wasn't — ' said Harry impatiently.

'Then we should come too,' said Neville simply. 'We want to help.'

'That's right,' said Luna, smiling happily.

Harry's eyes met Ron's. He knew Ron was thinking exactly what he was: if he could have chosen any members of the DA, in addition to himself, Ron and Hermione, to join him in the attempt to rescue Sirius, he would not have picked Ginny, Neville or Luna.

'Well, it doesn't matter, anyway,' said Harry through gritted teeth, 'because we still don't know how to get there — '

'I thought we'd settled that,' said Luna maddeningly. 'We're flying!'

'Look,' said Ron, barely containing his anger, 'you might be able to fly without a broomstick but the rest of us can't sprout wings whenever we — '

'There are ways of flying other than with broomsticks,' said Luna serenely.

'I s'pose we're going to ride on the back of the Kacky Snorgle or whatever it is?' Ron demanded.

'The Crumple-Horned Snorkack can't fly,' said Luna in a dignified voice, 'but they can, and Hagrid says they're very good at finding places their riders are looking for.'

Harry whirled round. Standing between two trees, their white eyes gleaming eerily, were two Thestrals, watching the whispered conversation as though they understood every word.

'Yes!' he whispered, moving towards them. They tossed their reptilian heads, throwing back long black manes, and Harry stretched out his hand eagerly and patted the nearest one's shining neck; how could he ever have thought them ugly?

'Is it those mad horse things?' said Ron uncertainly, staring at a point slightly to the left of the Thestral Harry was patting. 'Those ones you can't see unless you've watched someone snuff it?'

'Yeah,' said Harry.

'How many?'

'Just two.'

'Well, we need three,' said Hermione, who was still looking a little shaken, but determined just the same.

'Four, Hermione,' said Ginny, scowling.

'I think there are six of us, actually,' said Luna calmly, counting.

'Don't be stupid, we can't all go!' said Harry angrily. 'Look, you three — ' he pointed at Neville, Ginny and Luna, 'you're not involved in this, you're not — '

They burst into more protests. His scar gave another, more painful, twinge. Every moment they delayed was precious; he did not have time to argue.