Odd thing, time.
Prologue
The war was all around them. Flashing lights, screaming voices, incantations being yelled in every direction. Harry was under the invisibility cloak and stunning as many Death Eaters as he could on his way to get to the middle of the room, and Voldemort. As Harry got to where Ron and Hermione were dueling with him, Harry joined in (invisible of course). After a few minutes, he saw Ginny, Kingsley and Neville dueling with Bellatrix. Just as Bellatrix was about to shoot a Killing curse at Ginny, Molly jumped in between them and screamed something loudly while, at the same time, shot a jet of green light directly at Bellatrix's heart. When the light connected, Bellatrix keeled over with a surprised look on her face, dead.
The moment Voldemort realized what had happened, he screamed with rage and shouted a spell while blasting Harry, Ron and Hermione backwards. The spell seemed to cause them to start to dissolve. Everything from then seemed to happen in slow motion.
As they were falling backwards, Harry's invisibility cloak slipped off him but he maintained a grip on it. Voldemort saw that it was him and immediately shot a killing curse at him. But Harry was just as fast. As Voldemort screamed "Avada Kadavra" Harry screamed "Expelliarmus". The spells collided in mid-air and the green on bounced back at Voldemort, hitting him right in the chest, causing him to fall over in the same way Bellatrix had. Voldemort was finally dead.
But Harry had other things to worry about. He, Hermione and Ron were still dissolving! Finally, almost completely gone, he saw Ginny's smiling face as she realized Voldemort was gone and would never disrupt their life again. Then the world went black.