Scully: Mulder, it's me. I just had something incredibly strange happen. This piece of metal that they took out of Duane Barry, it has some kind of code on it. I ran it through a scanner, and some kind of serial number came up. What the hell is this thing, Mulder? It's almost as if... it's almost as if somebody was using it to catalogue him... Mulder! I need your help! Mulder!