Mr. Weasley warns Fred and George not to tell Mrs. Weasley that they've been gambling.
The whole campground is filled with celebrating Ireland performers.
There's lots of singing and noise – the night is going to be a long one.
Harry, Hermione, and Ron go to sleep.
Mr. Weasley then wakes Harry urgently: "No time, Harry – just grab a jacket and get outside – quickly!" (9.11).
People outside are screaming.
There's a crowd of wizards moving through the campground setting tents on fire and frightening everyone.
They're wearing hoods and masks.
They are making a family of Muggles – Mr. Roberts, his wife, and two children – float through the air sixty feet above the ground.
They're laughing at the terror of the poor Muggles.
Mr. Weasley and the older Weasley brothers take off to help the Ministry get the crowd under control.
Harry, Ron, Hermione, Fred, George, and Ginny all head towards the forest to hide.
They have the misfortune of bumping into Draco Malfoy.
Malfoy threatens Hermione: "Granger, they're after Muggles [...] D'you want to be showing off your knickers in midair?" (9.32).
(Hermione's parents are both Muggles, which makes some "pureblood" wizarding families like the Malfoys think that she's less magical than they are.)
Hermione pulls Harry and Ron away from Draco.
But during this argument with Draco, the three of them have gotten separated from Ginny, Fred, and George.
Harry notices that he's lost his wand in the shuffle.
Just then, Mr. Crouch's house-elf Winky bursts out from under a bush.
She warns them all to run away – bad things are happening.
They then manage to run into Ludo Bagman.
He has been so distracted by something that he doesn't even notice that there's "sort of a riot going on" (9.83), in Ron's words.
Ludo disappears to help the Ministry.
So now, Harry, Hermione, and Ron seem to be alone in the forest. Great.
They hear footsteps in the dark.
Harry asks who's there, but there is no answer.
Suddenly, a voice rings out: "MOSMORDRE!" (9.104).
Something appears in the sky: "a colossal skull, comprised of what looked like emerald stars, with a serpent protruding from its mouth like a tongue" (9.107).
Everyone in the forest really starts screaming at this sight.
Hermione tries to pull Harry and Ron away.
Harry has no idea why everyone is so freaked out.
Hermione explains that this thing is "the Dark Mark [...] You-Know-Who's sign!" (9.112).
The trio comes into a clearing to find twenty people pointing wands at them.
Twenty voices shout, "STUPEFY!" (9.119) all at once – they're trying to stun Harry, Ron, and Hermione.
Harry quickly pulls Ron and Hermione down and out of the way.
Mr. Weasley shouts, "STOP! That's my son!" (9.120).
Mr. Crouch is sure that one of these three must have conjured the Dark Mark.
The other witches and wizards point out that they are kids (that's what we were just thinking) – they wouldn't know how to cast the Dark Mark even if they wanted to.
Another Ministry wizard – Amos Diggory – goes into the forest to see if their stun spells hit anything.
And they did: Winky, the house-elf. She's completely unconscious.
Mr. Crouch looks completely freaked out, "his eyes blazing in his white face" (9.141).
Amos Diggory thinks Winky cast the Mark. After all, she has a wand (which is against wizarding law for non-humans).
Mr. Diggory wakes Winky up to get her evidence.
She promises that she just picked up the wand off the ground. She never used it, and she didn't see anything.
The wand that Winky had? Is Harry's missing one, of course.
Mr. Diggory tests Harry's wand to find out what its last spell was. Harry's wand is the wand that cast the Mark.
Because Winky was carrying the wand that cast the Mark, Mr. Diggory concludes: "You've been caught red-handed, elf! [...] Caught with the guilty wand in your hand!" (9.187).
Mr. Weasley tries to point out that Winky couldn't have learned the spell.
Mr. Crouch butts in: "Perhaps Amos is suggesting [...] that I routinely teach my servants to conjure the Dark Mark" (9.189).
Mr. Diggory gets very flustered very quickly – of course he doesn't think that Mr. Crouch is a follower of Voldemort.
They agree that Winky must have picked up the wand after the Mark's conjurer Disapparated.
Even though Winky is innocent in the whole Dark Mark disaster, Mr. Crouch intends to punish her disobedience.
Mr. Crouch plans to give Winky clothes, which is the only way to free a house-elf from its master's household.
He says mercilessly, "I have no use for a servant who forgets what is due to her master, and to her master's reputation" (9.213).
Mr. Weasley pulls Ron, Hermione, and Harry away from this scene.
Back at the campsite, Mr. Weasley and the trio do their best to explain what happened with Winky to Bill, Charlie, Percy, Fred, George, and Ginny.
Finally, Ron cracks: "Look, can someone just explain what that skull thing was?" (9.246).
Mr. Weasley replies: "You-Know-Who and his followers sent the Dark Mark into the air whenever they killed [...] The terror it inspired ... you have no idea, you're too young" (9.250).
And tonight is the first night the Dark Mark has been cast in thirteen years.
The people who made the Roberts family float in the air were Death Eaters – followers of You-Know-Who.
They all got away before the Ministry could catch them.
Ron asks why the Death Eaters ran away at the sight of the Dark Mark.
Bill points out: "I bet they'd be even more frightened than the rest of us to see [Voldemort] come back. They denied they'd ever been involved with him when he lost his powers, and went back to their daily lives" (9.259).
So it's a mystery who conjured the Dark Mark and why.
All they know is that it must have been someone who was a Death Eater at one point.