"So sorry, your bloodiness, Mr. Baron, Sir," he said greasily. "My mistake, my mistake -- I didn't see you -- of course I didn't, you're invisible -- forgive old Peevsie his little joke, sir."

"I have business here, Peeves," croaked Harry. "Stay away from this place tonight."

"I will, sir, I most certainly will," said Peeves, rising up in the air again. "Hope your business goes well, Baron, I'll not bother you."

And he scooted off
"Brilliant, Harry!" whispered Ron.

A few seconds later, they were there, outside the third-floor corridor -- and the door was already ajar.

"Well, there you are," Harry said quietly, "Snape's already got past Fluffy."

Seeing the open door somehow seemed to impress upon all four of them what was facing them. Underneath the cloak, Harry turned to the other three.

"If you want to go back, I won't blame you," he said. "You can take the cloak, I won't need it now."

"Don't be stupid," said Ron. "We're coming," said Hermione. "Always remember," answered Amelia. Harry pushed the door open.

As the door creaked, low, rumbling growls met their ears. All three of the dog's noses sniffed madly in their direction, even though it couldn't see them.

"What's that at its feet?" Hermione whispered.
"Looks like a harp," said Ron. "Snape must have left it there."

"It must wake up the moment you stop playing," said Harry. "Well, here goes..."