'Come to the right side, Draco. We can hide you more completely than you can ever imagine.'
The same moment Professor Dumbledore and Draco vanished into thin air, Harry felt his stiff body loosen up. Immediately, his Invisibility Cloak still on, he headed for the spiraled stairs. The chaos he walked into was unbelievable. Curses flew into every direction. Every now and then, warnings and screams of agony could be heard. Out of the corner of his eye, Harry could see Luna battling a female Death Eater. The curses cast at her all seemed to miss by an inch. Harry's eyes didn't linger upon her for too long. They had noticed a familiar figure, talking to one of the Death Eaters. It was Snape. Harry had barely had his eyes on his Potions professor for three seconds, when the man Snape was talking to nodded, then shouted something to the others.
All of a sudden, the fighting seemed to halt. Some Death Eaters threw a last curse, before following Snape, who had ordered to leave the building at once. Most closely following was Bellatrix Lestrange. At her sight, Harry could feel a fire of fury burning in his gut, remembering the events that had occurred at the Ministry, only a year ago.
He knew it. He'd always known it, Harry thought to himself. Snape belonged to the Dark Lord and always had. Regardless of what Dumbledore had told him, Harry had never believed Snape to be any better than the scum that had killed his godfather. The rage that burned inside him was indescribable now. Instinctively he followed them. He'd get that bastard, he had to.
He ran and ran and ran. The cloak was now a burden and Harry no longer cared if they could see him. As he ran down the stairs of the Entrance Hall, he took off the cloak, stuffed it in the nearest armor and started running again.
The cold wind met Harry's face, making his eyes teary and his throat dry as dust. The grounds were wet and muddy, and keeping up with the lot started to take more and more effort. Still, he was rapidly putting some distance between him and the castle. He knew that he had to act soon, that once they were outside the grounds of Hogwarts, they'd be able to Disapparate. He shouted.
Then, everything happened at once. Time seemed to speed up. Things happened too fast for Harry to register them properly. There was yelling. He was yelling. Curses were thrown, but they all rebounded.
'Fight back, you coward!'
More yelling. More curses.
'Avada kedavra!'
A body collapsed. Shrieking and shouting could be heard. Then, a Stunning Curse hit Harry flat in the chest, and everything went black.