Bruce was at his desk in the Manor. He had been steadily making his way through the stack of Wayne Enterprises briefs that seemed to endlessly pile up. He heard the sound of footsteps in the corridor, steps that paused right outside the closed door of the office. Bruce looked up from his computer, waiting for there to be a knock or for it to be opened by whoever was out there. There was neither for a few very long seconds, and Bruce felt his brow raising. There was no sound of retreating footsteps, so whoever it was they were still standing right outside the door. Hm. Interesting.

Finally, curiosity won, and Bruce called out, "You can come in, if you're waiting for an invitation out there."