The atmosphere became suddenly tense as neither party wanted to be the first to break the silence that had fallen between them. Around them members of the Order laughed and talked, oblivious to exchange that had just taken place...

Merlin!” cried a voice, and Albus turned to find the head nurse of the U-Ward walk in. She looked at Albus, then the boy, and turned her accusing eyes back to her old teacher. “What did you do?”

“I assure you Nora, that I merely stood in this spot right here and greeted him.”

Harry cautiously peaked out from under the safety of his arms, looking around he saw...nothing. Just a large stretch of land, surrounded by tall hills. Just as he pushed himself back onto his feet he heard a cough.

It was light, very faint... yet it was still a cough.

And that meant someone else was here.

The room was silent as he entered, empty but for the small bed that stood out starkly against its surroundings, and for the small figure hunched within it.

Unlike the old room,two thick enchanted metal chains protruding from behind the bed to clamp around both wrists of the hunched figure. Repressors attached at the ends to absorb any magic released.

A barbarous but necessary precaution, thought the stranger.

The destroyed section of the U-Ward, was proof enough for him.

“Now we are dipping into the realm of guess work and theories my boy,” Dumbledore said, “I need you to keep an open mind. Imagine, for a moment, that through the simple choice of turning right or left I created another world. There are now two worlds, with the same people and the same environment, but different situations to mold them into different people, two dimensions. One the original, while the other...  the alternate.”

"And so you're saying that the MPD was caused by a malfunction of the medical enchantments on the equipment used in the U-Ward?" The broad square-jawed witch inquired.

"That is correct, Madam Bones, to be more specific, they malfunctioned inside room number 27." Dumbledore replied.