Holding back another eye roll, Sherlock began to root through the papers on Dunbar's desk.

"I know your type is better at talking than listening, but really." That and Mitch seemed particularly preoccupied by the stains he couldn't see, because he hadn't been looking.

"Oh, if it was on the floor, I'm sure even the police would have noticed it," he said with a touch of exasperation. "Regardless, this office is practically a blueprint of Miss Dunbar's thoughts. If she anticipated any danger on the horizon, evidence of that will be found here. Even if she didn't, and I can find out who she had plans with that night, it's a step in the right direction."