You walked down the street in the middle of a crowded city alone. You pushed through crowds, turning sideways occasionally to slip past a particularly chatty pair that refused to move out of anybody’s way. As you looked around, you saw a man walking towards you. When he passed you, he gently grabbed your upper arm, turning you so you were walking along side him.

"Listen, I don’t have much time to explain. Just keep walking. Don't look alarmed. I'm The Doctor, I know you, and I need your help." He said, quickly and quietly.

He looked around as if he was expecting somebody but tried to focus on what he was saying. He seemed to be thinking. Both of you walked at a quick pace.

This man was a complete stranger yet he was saying he… knew you?? Something didn’t make sense.