The 13th Doctor Who

You were on your way home after hanging out with friends. At least, that's what you thought. Until the train was hit and you were left in the dark with other passengers. The doors locked, and you noticed something approaching. It was almost like an alien made of coils and loose wires. You stared at the thing until the doctor appeared in front of you. Did she... fall from the ceiling? "What?" she said indifferently, oblivious to the alien behind her.