Hermione was screaming; Ron was yelling;  Amelia was shouting profanity; there was a blinding flash as the wands in Black's hand sent a jet of sparks into the air that missed Harry's face by inches; Harry felt the shrunken arm under his fingers twisting madly, but he clung on, his other hand punching every part of Black it could find.

 But Black's free hand had found Harry's throat 

"No," he hissed, "I've waited too long --"

 The fingers tightened, Harry choked, his glasses askew. 

Then he saw Hermione's foot swing out of nowhere. Amelia's following swiftly after.. Black let go of Harry with a grunt of pain; Ron had thrown himself on Black's wand hand and Harry heard a faint clatter -- 

He fought free of the tangle of bodies and saw his own wand rolling across the floor; he threw himself toward it but 

"Argh!" 

Crookshanks had joined the fray; both sets of front claws had sunk themselves deep into Harry's arm; Harry threw him off, but Crookshanks now darted toward Harry's wand --

 "NO YOU DON'T!" roared Harry, and he aimed a kick at Crookshanks that made the cat leap aside, spitting; Harry snatched up his wand and turned - 

"Get out of the way!" he shouted at Ron, Hermione, and Amelia. 

They didn't need telling twice. Hermione, gasping for breath, her lip bleeding, scrambled aside, snatching up her Ron's  and Amelia's wands. Ron crawled to the four-poster and collapsed onto it, panting, his white face now tinged with green, both hands clutching his broken leg.

 Black was sprawled at the bottom of the wall. His thin chest rose and fell rapidly as he watched Harry walking slowly nearer, his wand pointing straight at Black's heart.