Hermione read the paper several times. Then she walked up and down the line of bottles, muttering to herself and pointing at them. At last, she clapped her hands.

"Got it," she said. "The smallest bottle will get us through the black fire — toward the Stone."

Harry looked at the tiny bottle.

"There's only enough there for one of us," he said. "That's hardly one swallow."

They looked at each other.

"Which one will get you back through the purple flames?"

Hermione pointed at a rounded bottle at the right end of the line.

"You drink that," said Harry. "No, listen, get back and get Ron. Grab brooms from the flying- key room, they'll get you out of the trapdoor and past Fluffy — go straight to the owlery and send Hedwig to Dumbledore, we need him. I might be able to hold Snape off for a while, but I'm no match for him, really."

"But Harry — what if You-Know-Who's with him?"

"Well — I was lucky once, wasn't I?" said Harry, pointing at his scar. "I might get lucky again."