"Together. On 3 we take it together" Harry said, panting slightly.
"3, 2, 1."
They each seized a handle of the cup and felt a familiar jerk-behind-the-navel feeling, and fell from the sky in a dark place. Sprawled out across the floor, they watched a figure approach them, and discreetly gripped their wands. As the figure came closer, Harry murmured "Wormtail."
Diggory tilted his head, and Harry hastily explained Pettigrew's betrayal. Wormtail grabbed Harry's body, seeming to not notice the other boy. Pain flashed through his head, a blinding pain, running to his scar. It was then that Diggory noticed the bundle next to Harry.
Moments later, Harry was restrained by a figure with a scythe, a statue. Both boys realised they were trapped in a graveyard, with a bubbling cauldron in the centre of a clearing. The bundle was slowly lowered into kt
it, and Diggory realised that this must be a ritual of necromancy. He whispered "Stupefy" and watched the man's body freeze up. Harry squirmed out from underneath the statue, and shouted "its - v-voldemort!"
Diggory gasped, and watched as Harry slowly approached the cauldron. Harry was obviously in pain, but somehow dealt with it as he said "silencio" and backed away from the cauldron, before closing his eyes, taking a deep breath and saying "incendio."
The cauldron was engulfed in flame, and the silently screaming 'body' was burnt to ashes, destroyed. Harry crumpled to the floor, exhausted, and Diggory knelt by him and summoned the portkey, taking them back inside the Hogwarts grounds.
To their surprise, two aurors and Dumbledore were awaiting their return, magic supressing handcuffs in their hands, stern looks on their faces and arrest papers in hand. Harry gulped in anticipation.