And pulling Dumbledore’s uninjured arm around his shoulders, Harry guided his headmaster back around the lake, bearing most of his weight.
“The protection was… after all… well-designed,” said Dumbledore faintly. “One alone could not have done it… You did well, very well, Harry…”
“Don’t talk now,” said Harry, fearing how slurred Dumbledore’s voice had become, how much his feet dragged. “Save your energy, sir… We’ll soon be out of here…”
“The archway will have sealed again… My knife…”
“There’s no need, I got cut on the rock,” said Harry firmly. “Just tell me where…”
“Here…”
Harry wiped his grazed forearm upon the stone: Having received its tribute of blood, the archway reopened instantly. They crossed the outer cave, and Harry helped Dumbledore back into the icy seawater that filled the crevice in the cliff.
“It’s going to be all right, sir,” Harry said over and over again, more worried by Dumbledore’s silence than he had been by his weakened voice. “We’re nearly there… I can Apparate us both back… Don’t worry…”
“I am not worried, Harry,” said Dumbledore, his voice a little stronger despite the freezing water. “I am with you.”
THE LIGHTNING-STRUCK TOWER
Once back under the starry sky, Harry heaved Dumbledore on to the top of the nearest boulder and then to his feet. Sodden and shivering, Dumbledore’s weight still upon him, Harry concentrated harder than he had ever done upon his destination: Hogsmeade. Closing his eyes, gripping Dumbledore’s arm as tightly as he could, he stepped forwards into that feeling of horrible compression.
He knew it had worked before he opened his eyes: the smell of salt, the sea breeze had gone. He and Dumbledore were shivering and dripping in the middle of the dark High Street in Hogsmeade. For one horrible moment Harry’s imagination showed him more Inferi creeping towards him around the sides of shops, but he blinked and saw that nothing was stirring; all was still, the darkness complete but for a few streetlamps and lit upper windows.
“We did it, Professor!” Harry whispered with difficulty; he suddenly realised that he had a searing stitch in his chest. “We did it! We got the Horcrux!”
Dumbledore staggered against him. For a moment, Harry thought that his inexpert Apparition had thrown Dumbledore off-balance; then he saw his face, paler and damper than ever in the distant light of a streetlamp.
“Sir, are you all right?”
“I’ve been better,” said Dumbledore weakly, though the corners of his mouth twitched. “That potion… was no health drink…”
And to Harry’s horror, Dumbledore sank on to the ground.
“Sir—it’s OK, sir, you’re going to be all right, don’t worry—”