Johnny's breath catches in his throat when Niall's fingers wrap around his hand, and again when another word comes, a command to what, the door, the house, the dream itself? He jumps when the door bursts open, thudding back against the doctor's chest, and shivers when the whisper comes against his ear.

He pulls away with some effort, moving forward into the new room, which reshapes itself around him like the others - another bedroom, a little smaller but no less pleasant - and he turns to face Niall, breathing sharp and heavy.

"What are you?" he demands, his voice coming apart at the seams, raw and afraid.