He sat there for a long time, gazing out at the water

He sat there for a long time, gazing out at the water, trying not to think about his godfather or to remember that it was directly across from here, on the opposite bank, that Sirius had once collapsed trying to fend off a hundred dementors ...

The sun had set before he realised he was cold. He got up and returned to the castle, wiping his face on his sleeve as he went.

Ron and Hermione left the hospital wing completely cured three days before the end of term. Hermione kept showing signs of wanting to talk about Sirius, but Ron tended to make ‘hushing’ noises every time she mentioned his name. Harry was still not sure whether or not he wanted to talk about his godfather yet; his wishes varied with his mood. He knew one thing, though: unhappy as he felt at the moment, he would greatly miss Hogwarts in a few days’ time when he was back at number four, Privet Drive. Even though he now understood exactly why he had to return there every summer, he did not feel any better about it. Indeed, he had never dreaded his return more.

Professor Umbridge left Hogwarts the day before the end of term. It seemed she had crept out of the hospital wing during dinnertime, evidently hoping to depart undetected, but unfortunately for her, she met Peeves on the way, who seized his last chance to do as Fred had instructed, and chased her gleefully from the premises whacking her alternately with a walking stick and a sock full of chalk. Many students ran out into the Entrance Hall to watch her running away down the path and the Heads of Houses tried only half-heartedly to restrain them. Indeed, Professor McGonagall sank back into her chair at the staff table after a few feeble remonstrances and was clearly heard to express a regret that she could not run cheering after Umbridge herself, because Peeves had borrowed her walking stick.

Their last evening at school arrived; most people had finished packing and were already heading down to the end-of-term leaving feast, but Harry had not even started.

‘Just do it tomorrow!’ said Ron, who was waiting by the door of their dormitory. ‘Come on, I'm starving.’

‘I won't be long ... look, you go ahead ...’

But when the dormitory door closed behind Ron, Harry made no effort to speed up his packing. The very last thing he wanted to do was to attend the Leaving Feast. He was worried that Dumbledore would make some reference to him in his speech. He was sure to mention Voldemort's return; he had talked to them about it last year, after all ...

Harry pulled some crumpled robes out of the very bottom of his trunk to make way for folded ones and, as he did so, noticed a badly wrapped package lying in a corner of it. He could not think what it was doing there. He bent down, pulled it out from underneath his trainers and examined it.

He realised what it was within seconds. Sirius had given it to him just inside the front door of number twelve Grimmauld Place. ‘Use it if you need me, all right?’

Harry sank down on to his bed and unwrapped the package. Out fell a small, square mirror. It looked old; it was certainly dirty. Harry held it up to his face and saw his own reflection looking back at him.

He turned the mirror over. There on the reverse side was a scribbled note from Sirius.

This is a two-way mirror, I've got the other one of the pair. If you need to speak to me, just say my name into it; you'll appear in my mirror and I'll be able to talk in yours. James and I used to use them when we were in separate detentions.

Harry's heart began to race. He remembered seeing his dead parents in the Mirror of Erised four years ago. He was going to be able to talk to Sirius again, right now, he knew it—

He looked around to make sure there was nobody else there; the dormitory was quite empty. He looked back at the mirror, raised it in front of his face with trembling hands and said, loudly and clearly, ‘Sirius.’

His breath misted the surface of the glass. He held the mirror even closer, excitement flooding through him, but the eyes blinking back at him through the fog were definitely his own.

He wiped the mirror clear again and said, so that every syllable rang clearly through the room:

‘Sirius Black!’

Nothing happened. The frustrated face looking back out of the mirror was still, definitely, his own ...

Sirius didn't have his mirror on him when he went through the archway, said a small voice in Harry's head. That's why it's not working ...

Harry remained quite still for a moment, then hurled the mirror back into the trunk where it shattered. He had been convinced, for a whole, shining minute, that he was going to see Sirius, talk to him again ...

Disappointment was burning in his throat; he got up and began throwing his things pell-mell into the trunk on top of the broken mirror—

But then an idea struck him ... a better idea than a mirror ... a much bigger, more important idea ... how had he never thought of it before—why had he never asked?

He was sprinting out of the dormitory and down the spiral staircase, hitting the walls as he ran and barely noticing; he hurtled across the empty common room, through the portrait hole and off along the corridor, ignoring the Fat Lady, who called after him: ‘The feast is about to start, you know, you're cutting it very fine!’