The title of this article is conjectural. Although it is based on canonical information, the actual name is a conjecture and may be supplanted at any time by additional information released from canonical sources. If this occurs, please move this page to the appropriate title.
Draco Malfoy: "STOP! The Dark Lord wants him alive –"
Vincent Crabbe: "So? I'm not killing him, am I? But if I can, I will, the Dark Lord wants him dead anyway, what's the diff – ? It's that Mudblood! Avada Kedavra!"
"I know what the diadem looks like, and I know where it is. He hid it exactly where I had my old Potions book, where everyone's been hiding stuff for centuries. He thought he was the only one to find it. Come on."
As Harry, Ron and Hermione Granger entered the Room, they split up into adjacent aisles between the towering piles of assorted discarted objects. Draco, Crabbe and Goyle followed Harry and stopped him.[1]
Initially, Harry mocked them, thinking they were merely there to make a fool of themselves in an attempt to capture Harry himself. Crabbe started bringing down the mountains of junk, and started to get violent when Malfoy told him to stop as he would eventually wreck the Room. Not realising, as Draco did, that the diadem was something of importance to Voldemort, Crabbe started shooting Cruciatus Curses at Ronald Weasley and Killing Curses at Hermione Granger. Harry, Ron and Hermione responded with Disarming Charms, Stunning Spells and Full Body-Bind Curses, leaving Malfoy and Goyle wandless and Goyle unconscious. As Harry and Hermione looked for the diadem, Crabbe conjured Fiendfyre, setting the Room's piles of junk ablaze.[1]
As Harry, Ron and Hermione ran for their lives, they became encircled by fire. They got hold of a pair of heavy-looking broomsticks from a nearby pile of junk. When they soared through the air, Harry spotted Malfoy and Goyle atop a fragile pile of charred desks. Getting hold of them, they left heading for the door, not before Harry got hold of the diadem, already destroyed by the Fiendfyre.[1]
Aftermath
"A bloodlike substance, dark and tarry, seemed to be leaking from the diadem. Suddenly Harry felt the thing vibrate violently, then break apart in his hands, and as it did so, he thought he heard the faintest, most distant scream of pain, echoing not from the grounds or the castle, but from the thing that had just fragmented in his fingers."
Likewise it is also Goyle who shot the Killing Curse.
Harry, Ron and Hermione don't enter the Room of Requirement at the same time. Harry ran across the castle, chased by unfriendly spells in the Hall of Hexes, while Ron and Hermione were studying the Marauder's Map at the time.
Harry's explanation that he saw the diadem before was omitted. Instead, he sensed it like he did, when confronting the Locket in the Ministry of Magic and the Cup at Gringotts.
Harry and Draco had a brief argument about Draco's wand allegiance, when they were interrupted by Hermione's Disarming Charm. However earlier, Harry didn't mock the Slytherin trio.
Draco, Goyle and Zabini didn't eavesdrop the trio, but followed Harry into the Room of Requirement, while they were hiding in the Hall of Hexes, after Draco apparated them there.
