Rose wasn't sure where half of the doors in this corridor led. They were always changing. She'd gotten used to it by now, and was just focused on finding her own room. It should be easy enough, if she kept her mind on it.
Then she heard the Doctor scream. Her blood went cold. She couldn't remember ever hearing him scream like that. She turned around, running back to the source of the sound. She needed to help him.
She knocked first, though it grew to pounding when she found the door was locked. She turned the knob frantically, shaking the door. "Doctor?" she called, feeling sick to her stomach.