Then Lupin spoke, in a very tense voice.

 "Where is he, Sirius?" 

Harry looked quickly at Lupin. He didn't understannd what Lupin meant. Who was Lupin talking about? He turned to look at Black again.

 Black's face was quite expressionless. For a few seconds, he didn't move at all. Then, very slowly, he raised his empty hand and pointed straight at Ron. Mystified, Harry glanced around at Ron, who looked bewildered.

 "But then..." Lupin muttered, staring at Black so intently it seemed he was trying to read his mind, "... why hasn't he shown himself before now? Unless" -- Lupin's eyes suddenly widened, as though he was seeing something beyond Black, something none of the rest could see, "-- unless he was the one... unless you switched... without telling me?"

 Very slowly, his sunken gaze never leaving Lupin's face, Black nodded. 

"Professor," Harry interrupted loudly, "what's going on --?"

 But he never finished the question, because what he saw made his voice die in his throat. Lupin was lowering his wand, gazing fixed at Black. The Professor walked to Black's side, seized his hand, pulled him to his feet so that Crookshanks fell to the floor, and embraced Black.

"FUCKING HELL!" Amelia yelled. Harry noticed her voice changed from America to birth when she yelled. "I HAD HOPE FOR YOU, GODDAMNIT!"

 Harry felt as though the bottom had dropped out of his stomach.

Dropping her stick, Amelia pulled out her pocket knife. Lupin and Sirius shared a glance Amelia slid her thumb over the engraving."Pure silver, does that worry you?"

"I DON'T BELIEVE IT!" Hermione screamed.

 Lupin let go of Black and turned to her. She had raised herself off the floor and was pointing at Lupin, wild-eyed. "You -- you --"

 "Hermione --"

 "-- you and him!" 

"Hermione, calm down --"