'SECTUMSEMPRA!' Harry screamed and pointed his wand at Malfoy. Malfoy screamed louder than you could imagine. He fell and lay there, on the ground, bleeding to death.
Harry panted, what had he done? To Harry's nightmare, Snape came in. Snape liked him, but still, a teacher was the last kind of person Harry wanted to have on the 'crimescene'.
'What did he do to you, Harry?' Snape asked. 'He, he…' Harry could not speak. The torture of enormous guilt had him in his power. He sank to the floor, panting louder and louder.
'What did he do to you, Harry? Snape asked again and Harry knew he had to answer now.
'He attacked me. So I attacked back.' 'How do you know this curse? It is a very bad curse, you can't have learned it in your classes.' Harry did not know what to answer.
'Can you get your potionsbook, please? I want to check something.'