The room of the Elementals is concealed within the very walls of Hogwarts castle. Accessible through concealed entrances throughout the castle, only those who know of the identity of the current Elemental may enter. The doorways exist behind sensitive walls, tapestries or paintings, and all lead to one place. The room is real and it is not – it plays no part in the floor plan. It is a part of the walls itself.

One of such entrances is within the Head master's study. After Remus had left, Dumbledore had ushered Iris towards it. As the 10 year-old girl placed her hand against the stone she felt a thousand years worth of lives of her kind rush through her skin. This was home.

As Iris stepped through and opened her eyes, she could not believe what she saw. The large open space, everything about it summed up her powers. A waterfall tumbled across the expanse of one wall, the water disappearing before it hit the ground, a soft mist around her ankles. Over the other walls, Ivy and other climbers tumbled across, obscuring the stone beneath them. The Fireplace was larger than herself, the flames dancing over a metre tall. Then there was a ball, a sphere constructed of swirling air. Iris opened her hands and it spun down towards her.

As she peered in, she saw snippets of the lives of other Elementals; she saw their faces, all which came before her. Then there pieces of her memories, on the island, coming to Hogwarts. Then there was her Parents; her brother. She blinked away the tear within her eye – she felt she knew them. She glanced around at the other features of the room: furniture, books... everything she needed to live. But this sphere was her link to them.

"Do you like it?" Dumbledore asked, standing a few steps behind her, his voice careful and kind.

She considered for a moment, glancing around before smiling.

"It's perfect."

"Good. You will have to stay there for prolonged periods of time. I'm afraid I cannot let you be with the other students," Dumbledore said, leading her out of the room. "You are a year younger than the first years, and we have to keep you safe."

"I understand," Iris nodded.

"I'm glad."

"Sir?" Iris asked, as she sat down on the step by his office desk.

"Yes?"

"How do I choose which door to exit through? There's no indication."

"Ah, Iris, you merely have to think and picture the place you want to leave by. The majority of the time, you will want to come here. So, you just picture my office as you walk through the wall, and you will end up here."

Iris went to staring at her feet again. She frowned, thinking she was hearing approaching noises. She glanced up at the clock, seeing it to be almost midnight. No-one could be awake at this time of night, surely?

She and Dumbledore both jumped to their feet as Professor McGonagall bundled through the door, shoving to ginger haired boys and a dark-skinned girl through before her.

"Professor Dumbledore," she shrilled, "perhaps you would take the time to remind Miss Johnson and the Weasley twins that they shouldn't be out of bed after-"

She stopped abruptly, taking in the situation before her. She inhaled sharply, realising the mistake she had made.

"Who's that?"Fred Weasley asked, staring at Iris in the corner.