The body lies unrecognized in the hallway. People hurry past on their way to somewhere, holding their breath until they get upwind. Some step gingerly over it. Some tiptoe around it. One or two glance at you, hesitate, then think better of it.
Soon, the whitecoats will scrape the body from the floor and conduct a speedy autopsy. The cause of death will be assigned. The perpetrator is predetermined. You already know who it is.