Harry approached it cautiously, pointing the wand’s beam at it. This looked like some kind of enchantment. He wondered whether he might be able to blast it out of the way.

“Reducto!” he said.

The spell shot straight through the mist, leaving it intact. He supposed he should have known better; the Reductor Curse was for solid objects. What would happen if he walked through the mist? Was it worth chancing it, or should he double back?

He was still hesitating when a scream shattered the silence.

“Fleur?” Harry yelled.

There was silence. He stared all around him. What had happened to her? Her scream seemed to have come from somewhere ahead. He took a deep breath and ran through the enchanted mist.

The world turned upside down. Harry was hanging from the ground, with his hair on end, his glasses dangling off his nose, threatening to fall into the bottomless sky. He clutched them to the end of his nose and hung there, terrified. It felt as though his feet were glued to the grass, which had now become the ceiling. Below him the dark, star-spangled heavens stretched endlessly. He felt as though if he tried to move one of his feet, he would fall away from the earth completely.

Think, he told himself, as all the blood rushed to his head, think . . .

But not one of the spells he had practiced had been designed to combat a sudden reversal of ground and sky. Did he dare move his foot? He could hear the blood pounding in his ears. He had two choices—try and move, or send up red sparks, and get rescued and disqualified from the task.

He shut his eyes, so he wouldn’t be able to see the view of endless space below him, and pulled his right foot as hard as he could away from the grassy ceiling.

Immediately, the world righted itself. Harry fell forward onto his knees onto the wonderfully solid ground. He felt temporarily limp with shock. He took a deep, steadying breath, then got up again and hurried forward, looking back over his shoulder as he ran away from the golden mist, which twinkled innocently at him in the moonlight.

He paused at a junction of two paths and looked around for some sign of Fleur. He was sure it had been she who had screamed. What had she met? Was she all right? There was no sign of red sparks—did that mean she had got herself out of trouble, or was she in such trouble that she couldn’t reach her wand? Harry took the right fork with a feeling of increasing unease . . . but at the same time, he couldn’t help thinking, One champion down . . .