The imposter had assumed my name and began to inch his way closer to Lord John Greystroke.  He had stolen Lord John's house key and began to run off.  I was considering letting him go, but only for a split second.  No one shall be an imposter of Warik and escape!  I immediately attacked him despite our close proximety to town.  I had nothing to lose but my pride.

I raced after him getting closer and closer with every step, 3 hits from my war fork brought him down to 1 hp and very little stamina.  He ran into town and nearby players called guards, but none came.  As he was about to round the corner near the provisioner, my war fork pierced his skull and he collapsed.  I picked the key up off the corpse and celebrated my triumph over the imposter.   (Screenshot)

I considered keeping the key, but then decided that I wouldn't keep stolen stuff that I didn't steal myself.  Besides, Lord John sparred with me and raised my fencing by 5 so I owed him at least his key back.
 
 
Moral of this Story:  If you're gonna impersonate the man, you'd better not do it while he's around.  Cuz he'll whoop you good.