Harry saw Malfoy’s pale eyes shift back to Dumbledore in the greenish glare of the Mark.
“No,” he said. “I’ve got back-up. There are Death Eaters here in your school tonight.”
“Well, well,” said Dumbledore, as though Malfoy was showing him an ambitious homework project. “Very good indeed. You found a way to let them in, did you?”
“Yeah,” said Malfoy, who was panting. “Right under your nose and you never realised!”
“Ingenious,” said Dumbledore. “Yet… forgive me… where are they now? You seem unsupported.”
“They met some of your guard. They’re having a fight down below. They won’t be long… I came on ahead. I—I’ve got a job to do.”
“Well, then, you must get on and do it, my dear boy,” said Dumbledore softly.
There was silence. Harry stood imprisoned within his own invisible, paralysed body, staring at the two of them, his ears straining to hear sounds of the Death Eaters’ distant fight, and in front of him, Draco Malfoy did nothing but stare at Albus Dumbledore who, incredibly, smiled.
“Draco, Draco, you are not a killer.”
“How do you know?” said Malfoy at once.
He seemed to realise how childish the words had sounded; Harry saw him flush in the Mark’s greenish light.
“You don’t know what I’m capable of,” said Malfoy more forcefully, “you don’t know what I’ve done!”
“Oh, yes, I do,” said Dumbledore mildly. “You almost killed Katie Bell and Ronald Weasley. You have been trying, with increasing desperation, to kill me all year. Forgive me, Draco, but they have been feeble attempts… so feeble, to be honest, that I wonder whether your heart has been really in it…”
“It has been in it!” said Malfoy vehemently. “I’ve been working on it all year, and tonight—”
Somewhere in the depths of the castle below Harry heard a muffled yell. Malfoy stiffened and glanced over his shoulder.
“Somebody is putting up a good fight,” said Dumbledore conversationally. “But you were saying… yes, you have managed to introduce Death Eaters into my school which, I admit, I thought impossible… how did you do it?”
But Malfoy said nothing: he was still listening to whatever was happening below and seemed almost as paralysed as Harry was.
“Perhaps you ought to get on with the job alone,” suggested Dumbledore. “What if your back-up has been thwarted by my guard? As you have perhaps realised, there are members of the Order of the Phoenix here tonight, too. And after all, you don’t really need help… I have no wand at the moment… I cannot defend myself.”