“We’re not—meeting here,” said Harry. “We just—met here.”

“Indeed?” said Snape. “You have a habit of turning up in unexpected places, Potter, and you are very rarely there for no good reason . . . I suggest the pair of you return to Gryffindor Tower, where you belong.”

Harry and Neville set off without another word. As they turned the corner, Harry looked back. Snape was running one of his hands over the one-eyed witch’s head, examining it closely.

Harry managed to shake Neville off at the Fat Lady by telling him the password, then pretending he’d left his vampire essay in the library and doubling back. Once out of sight of the security trolls, he pulled out the map again and held it close to his nose.

The third floor corridor seemed to be deserted. Harry scanned the map carefully and saw, with a leap of relief, that the tiny dot labeled Severus Snape was now back in its office.

He sprinted back to the one-eyed witch, opened her hump, heaved himself inside, and slid down to meet his bag at the bottom of the stone chute. He wiped the Marauder’s Map blank again, then set off at a run.

• • •

Harry, completely hidden beneath the Invisibility Cloak, emerged into the sunlight outside Honeydukes and prodded Ron in the back.

“It’s me,” he muttered.

“What kept you?” Ron hissed.

“Snape was hanging around . . . ”

They set off up the High Street.

“Where are you?” Ron kept muttering out of the corner of his mouth. “Are you still there? This feels weird . . . ”

They went to the post office; Ron pretended to be checking the price of an owl to Bill in Egypt so that Harry could have a good look around. The owls sat hooting softly down at him, at least three hundred of them; from Great Grays right down to tiny little Scops owls (“Local Deliveries Only”), which were so small they could have sat in the palm of Harry’s hand.

Then they visited Zonko’s, which was so packed with students Harry had to exercise great care not to tread on anyone and cause a panic. There were jokes and tricks to fulfill even Fred’s and George’s wildest dreams; Harry gave Ron whispered orders and passed him some gold from under the cloak. They left Zonko’s with their money bags considerably lighter than they had been on entering, but their pockets bulging with Dungbombs, Hiccup Sweets, Frog Spawn Soap, and a Nose-Biting Teacup apiece.

The day was fine and breezy, and neither of them felt like staying indoors, so they walked past the Three Broomsticks and climbed a slope to visit the Shrieking Shack, the most haunted dwelling in Britain. It stood a little way above the rest of the village, and even in daylight was slightly creepy, with its boarded windows and dank overgrown garden.