Disclaimer: I do not own any of the Harry Potter books, characters or locations.

AN: Sorry if you have been following this story and have found the changes of scene difficult to follow. In the word document I had inserted page breaks but these didn't come out on the fanfiction. This story is AU, as Regulus does not go back to the past, Sirius does not go to Azkaban (I have arranged a more interesting breakout), and there is no mention in the books about Hermione having an adopted brother. If you are reviewing, please do not flame me about gender stereotyping – if there is any, it was unintentional.

Anyway, here's what happened to Sirius.

Chapter Two

Late July 1967

Sirius was very confused – the Aurors had taken him away from his mother, and left him in a white-walled room with the healer lady. The healer had told him that his mother was being 'questioned' and was being taken to a "hearing". Sirius didn't know what a hearing was, and the lady didn't look as if she was going to tell him anything. There was also the matter that his brother had just vanished off the face of the earth. He'd tried asking what was going on, but no one seemed to be able to give an answer.

It had taken little over half an hour for the healer to examine Sirius. Other than a few bruises, there was nothing wrong with him, except for the distress of witnessing the incident. After about two hours of sitting doing nothing, the door opened and a tall, intimidating-looking man with black hair and grey eyes entered the room.

"Good Afternoon," he said looking at the healer, his face remaining expressionless. "I'm here to pick up Sirius."

The man held out his hand to Sirius, who took it. He then proceeded to drag the poor boy through the deserted corridors of the ministry (because that is where Sirius had been taken), and into the atrium. The two flooed to Grimmauld Place.

As soon as they were out of public view, the man's face changes from expressionless to furious.

"Have you any idea what shame you have brought on this family? Your mother may go to Askaban because of what you two have done today!"

"She deserves to go. I hate her!"

"Don't you dare speak about your mother like that. You're a disgrace to the house of Black?"

"But sh-she blasted her wand at R-regulus. She k-killed him!" cried Sirius.

"She didn't kill him. She was just doing what was necessary for our family. Now go to your room."

Sirius ran upstairs and collapsed on the bed. He closed his eyes and finally let the tears he had been holding all day fall. Eventually he fell asleep.

His father followed him upstairs a few hours later. He hadn't been able to do anything to save his wife from the fate of Azkaban, but he had managed to pay enough money to the ministry to keep quiet. He couldn't afford for Sirius to tell anyone the true story, so he did the only thing he could think of.

He obliviated his own son.

...

The next morning Sirius woke up. He ran into his brother's room to jump on the bed and wake him up to, but stopped when he entered the room. His brother's room was empty. Where was he? Sirius ran downstairs to the dining room, to find his father sitting eating the breakfast Kreacher had prepared whilst reading the newspaper.

"Father, where is Regulus?" asked Sirius.

"I'm sorry, Sirius," said his Father, his grey eyes looking very sincere, "I have some very grave news to tell you."

"What happened Father?"

"Do you remember a few weeks ago, Regulus had that illness," said his father calmly.

"Yes father," said Sirius, remembering.

"Well, he has become ill again, and he and your mother are at St. Mungos hospital now. I'm sorry I didn't tell you earlier, but your mother and I didn't want to wake you up."

"Can we go and see him now?"

"Not at the moment, but we can later. When you've had your breakfast," he replied. He sighed inwardly. He had solved the problem for now, and it wouldn't take much more lying for Sirius to believe his brother was dead.

...

A/N: next chapter will be with Regulus and Hermione. Next few chapters will be the two of them growing up, a visit from Albus Dumledore, a trip to Diagon Ally and a surprise encounter with Neville's gran. Please review.