If you are playing as killer and a survivor disconnects, you HAVE to let the last one go.
This was kindly explained to me by a survivor in the endgame chat today.
I just figured I'd pass the message along to the rest of you so that you don't have you put yourselves through the trauma that I put myself through today after the full horror what I'd done dawned on me.
I'm shaking. I'm sweating. I even cried a little. And I know I won't get any sleep tonight. How could God allow this to happen? The humanity.
On the plus side, I know that the next time my controller goes screwy or my connection goes out for five minutes and I spend the first half of the game staring into the wall as a result, the survivors are going to give me a free kill. Because things in this game work both ways.