Percy Jackson The Multi-Verse Hero.

Ch 1 "It has my name on it"

They were standing in a large, circular room. Everything in here was black including the floor and ceiling — identical, unmarked, handle-less black doors were set at intervals all around the black walls, interspersed with branches of candles whose flames burned blue, their cool, shimmering light reflected in the shining marble floor so that it looked as though there was dark water underfoot.

"Someone shut the door," Harry muttered. Neville slowly closed the door. The circular wall was rotating. Hermione grabbed Harry's arm as though frightened the floor might move too, but it did not. For a few seconds, the blue flames around them were blurred to resemble neon lines as the wall sped around and then, quite as suddenly as it had started, the rumbling stopped and everything became stationary once again. Harry's eyes had blue streaks burned into them; it was all he could see.

"What was that about?" whispered Ron fearfully.

"I think it was to stop us knowing which door we came in from," said Ginny in a hushed voice.

"I don't like this," I warned

"How're we going to get back out?" said Neville uncomfortably.

"Well, that doesn't matter now," said Harry forcefully "We won't need to get out till we've found Sirius —"

"Don't go calling for him, though!" Hermione said urgently,

"Where do we go, then, Harry?" Ron asked.

"I don't —" Harry began. He swallowed. "In the dreams I went through the door at the end of the corridor from the lifts into a dark room — that's this one — and then I went through another door into a room that kind of . . . glitters. We should try a few doors," he said hastily. "I'll know the right way when I see it. C'mon." He marched straight at the door now facing him, the others following close behind him, set his left hand against its cool, shining surface, raised his wand, ready to strike the moment it opened, and pushed. It swung open easily. After the darkness of the first room, the lamps hanging low on golden chains from this ceiling gave the impression that this long rectangular room was much brighter, though there were no glittering, shimmering lights such as Harry had seen in his dreams. The place was quite empty except for a few desks and, in the very middle of the room, an enormous glass tank of deep-green water, big enough for all of them to swim in, which contained a number of pearly white objects that were drifting around lazily in the liquid.

"What're those things?" whispered Ron.

"Dunno," said Harry.

"Are they fish?" breathed Ginny.

"Aquavirius maggots!" said Luna excitedly. "Dad said the Ministry were breeding —"

"No," said Hermione. She sounded odd. She moved forward to look through the side of the tank. "They're brains."

"Brains?"

"Yes . . . I wonder what they're doing with them?"

"Let's get out of here," said Harry. "This isn't right, we need to try another door —"

"There are doors here too," said Ron, pointing around the walls. This place seemed like the labyrinth, constantly trying to confuse you

"In my dream I went through that dark room into the second one," he said. "I think we should go back and try from there." So they hurried back into the dark, circular room; the ghostly shapes of the brains were now swimming before Harry's eyes instead of the blue candle flames.

"Wait!" said Hermione sharply, as Luna made to close the door of the brain room behind them.

"Flagrate!" She drew with her wand in midair and a fiery X appeared on the door. No sooner had the door clicked shut behind them than there was a great rumbling, and once again the wall began to revolve very fast, but now there was a great red-gold blur in amongst the faint blue, and when all became still again, the fiery cross still burned, showing the door they had already tried. Wish they had that trick in the Labyrinth, not that it would've done much good, they couldn't backtrack the way they were now.