unexpected, caught him around the middle and held him fast

unexpected, caught him around the middle and held him fast. For a few seconds Dobby struggled, then went limp.

“Thank you, Harry Potter,” he panted. “Dobby still finds it difficult to speak ill of his old masters.”

Harry released him; Dobby straightened his tea cozy and said defiantly to Kreacher, “But Kreacher should know that Draco Malfoy is not a good master to a house-elf!”

“Yeah, we don't need to hear about you being in love with Malfoy,” Harry told Kreacher. “Let's fast forward to where he's actually been going.”

Kreacher bowed again, looking furious, and then said, “Master Malfoy eats in the Great Hall, he sleeps in a dormitory in the dungeons, he attends his classes in a

variety of—”

“Dobby, you tell me,” said Harry, cutting across Kreacher. “Has he been going anywhere he shouldn't have?”

“Harry Potter, sir,” squeaked Dobby, his great orblike eyes shining in the firelight, “the Malfoy boy is breaking no rules that Dobby can discover, but he is still

keen to avoid detection. He has been making regular visits to the seventh floor with a variety of other students, who keep watch for him while he enters—”

“The Room of Requirement!” said Harry, smacking himself hard on the forehead with Advanced Potion-Making. Hermione and Ron stared at him. “That's where he's been

sneaking off to! That's where he's doing... whatever he's doing! And I bet that's why he's been disappearing off the map—come to think of it, I've never seen the Room

of Requirement on there!”

“Maybe the Marauders never knew the room was there,” said Ron.

“I think it'll be part of the magic of the room,” said Hermione. “If you need it to be unplottable, it will be.”

“Dobby, have you managed to get in to have a look at what Malfoy's doing?” said Harry eagerly.

“No, Harry Potter, that is impossible,” said Dobby.

“No, it's not,” said Harry at once. “Malfoy got into our headquarters there last year, so I'll be able to get in and spy on him, no problem.”

“But I don't think you will, Harry,” said Hermione slowly. “Malfoy already knew exactly how we were using the room, didn't he, because that stupid Marietta had

blabbed. He needed the room to become the headquarters of the D.A., so it did. But you don't know what the room becomes when Malfoy goes in there, so you don't know

what to ask it to transform into.”