Professor Umbridge gave her most pronounced cough yet.
'May I offer you a cough drop, Dolores?' Professor McGonagall asked curtly, without looking at Professor Umbridge.
'Oh, no, thank you very much,' said Umbridge, with that simpering laugh Harry hated so much. 'I just wondered whether I could make the teensiest interruption, Minerva?'
'I daresay you'll find you can,' said Professor McGonagall through tightly gritted teeth.
'I was just wondering whether Mr Potter has
But the fact remained that if he was caught . . .
'Dumbledore sacrificed himself to keep you in school, Harry!' whispered Hermione, raising her book to hide her face from Umbridge. 'And if you get thrown out today it will all have been for nothing!'
He could abandon the plan and simply learn to live with the memory of what his father had done on a summer's day more than twenty years ago . . .
And then he remembered Sirius in the fire upstairs in the Gryffindor common room . . .
Umbridge came pelting out of her classroom as fast as her short legs would carry her. Pulling out her wand, she hurried off in the opposite direction: it was now or never.
'Harry — please!' Hermione pleaded weakly.
But he had made up his mind; hitching his bag more securely on to his shoulder, he set off at a run, weaving in and out of students now hurrying in the opposite direction to see what all the fuss was about in the east wing.
Harry reached the corridor to Umbridge's office and found it deserted. Dashing behind a large suit of armour whose helmet creaked around to watch him, he pulled open his bag, seized Sirius's knife and donned the Invisibility Cloak. He then crept slowly and carefully back out from behind the suit of armour and along the corridor until he reached Umbridge's door.
He inserted the blade of the magical knife into the crack around it and moved it gently up and down, then withdrew it. There was a tiny click, and the door swung open. He ducked inside the office, closed the door quickly behind him and looked around.
Nothing was moving except the horrible kittens that were still frolicking on the wall plates above the confiscated broomsticks.
Harry pulled off his Cloak and, striding over to the fireplace, found what he was looking for within seconds: a small box containing glittering Floo powder.
He crouched down in front of the empty grate, his hands shaking. He had never done this before, though he thought he knew how it must work. Sticking his head into the fireplace, he took a large pinch of powder and dropped it on to the logs stacked neatly beneath him. They exploded at once into emerald green flames.
'Number twelve, Grimmauld Place!' Harry said loudly and clearly.
It was one of the most curious sensations he had ever experienced. He had travelled by Floo powder before, of course, but then it had been his entire body that had spun around and around in the flames through the network of wizarding fireplaces that stretched over the country. This time, his knees remained firm upon the cold floor of Umbridge's office, and only his head hurtled through the emerald fire . . .
And then, as abruptly as it had begun, the spinning stopped. Feeling rather sick and as though he were wearing an exceptionally hot muffler around his head, Harry opened his eyes to find that he was looking up out of the kitchen fireplace at the long, wooden table, where a man sat poring over a piece of parchment.