Toward the end of the third book, dumbledore sais he went to talk to Sirius, this is how i think the conversation must of gone... (or.. atleast along the lines of this..)
I hope you like it.
'We caught him'.
Those words still floated around dumbledore's head.
"Im going to fetch the dementors".
Dumbledore walked faster and faster towards the room of the man who betrayed his own best friend, his anger rising as he went.
Dumbledore opened the door slowly, his wand pointed at the man by the window, Sirius black.
Sirius did not turn his head away from the moon, 'hullo, professor.' He said. Dumbledore frowned, Sirius seemed so sane. Dumbledore waked towards Sirius, 'I want to know why.' Dumbledore said flatly, 'why you did it, Sirius, why!" his voice rising slightly. Sirius turned his head slightly, Dumbledore took a step back. Sirius was barely recognizable as the carefree teen he used to be. "I don't expect you to believe me, sir, nor… at this point does it matter, it's all over for me…' Sirius said quietly, "but I didn't do it, professor, I didn't do it!!!' Sirius was standing now.
Dumbledore stared at Sirius, boring into his eye's, examining every detail of them. There was not even the slightest trace of evil. 'professor.. it was peter.. me and him.. we switched… he.. killed.. I didn't… please…' Sirius groaned. Sirius took a step towards Dumbledore, and to his surprise Dumbledore lowered his wand, his eyes wide. 'Sirius.. Im.. sorry..' Dumbledore grabbed sirius's arms, and pulled him forwards, staring him in the eye's, 'im so sorry' Dumbledore whispered, shaking his head, 'sirius, im going to get you out of here', Sirius looked up at Dumbledore, 'what? How?' he asked, 'Don't worry, you stay here, but I promise you, you will be free tonight" Dumbledore smiled slightly. Dumbledore turned to leave, "professor wait!" Dumbledore looked back at Sirius, "what about remus?", "Dumbledore's eye's twinkled, 'Don't worry, everything will be fine, Sirius".
Sirius smiled, and for the first time, in twelve years, Dumbledore saw the unique glint in sirius's eye's. A sparkle he had seen so many times before, one that had come up everytime Sirius was with the marauders, evertime he pulled a prank, everytime he was truly happy.
With that, Dumbledore left, leaving Sirius alone. Sirius turned back towards the window.
"prongs.." he whispered into the night, 'im gonna kill peter.'
I hope you liked that, please review and ill give you some cheese.
Merry christmas, XD. (this was written on boxingday)