I agree with Kath, if I were a Duck I'd rather have talkative people near the end because amongst them I could blend in. So, by killing off the silent type, they leave very few clues. By why am I speculating on this? Meh.
Sadly I think it's prudent for me to vote currently my connection to our discussion at home has been acting strange lately so I will need to post my vote now to ensure that I get it in.
Now the question is who? Nilp makes good cannon fodder but is it an easy way out? But then again he could be guilty. Nogrod, his death would at least slow down the speed of this discussion

but he may also be guilty. I'm really fairly clueless right now so as to spread things out a bit.
++Nogrod
there is a decent potential of this.