Aliens amongst us...

Yet another dream about aliens.  I know, right?

Anyway, in this dream, an alien had apparently landed on earth but had taken on a human form to blend in.  The dream itself kept jumping around, but primarily took place in a block of flats.  At one point, I was outside the building looking into one of the flats through the wall (I had some sort of x-ray vision).  I was then inside the building, attending a party at the same flat I was just looking at from the outside.  I could hear the "voice" of the alien narrating his thoughts of earth.  He spoke about how we humans looked strange, that we both spoke and ate with  our mouths (which seemed odd to him) and about how he was getting used to how hideous he believed we all looked.  I never saw this alien, I just heard his thoughts.

At the party itself, everyone was talking about this alien as the story had made the news.  I mingled amongst the guests, but suddenly needed the toilet.  I was about to go, but somebody was ahead of me. Fortunately, there was a second bathroom stall next to it, so I went in there instead.  I walked into the cubicle and shut the door.  Someone had taped what looked like the cutting from a newspaper to one of the cubicle walls; a black and white, crumpled sheet with the face of a man in his 50s.  Underneath the picture, the words 'CATNAP' had been scrawled.  I didn't understand the significance of this, but I knew the man in the cutting had something to to with the alien.

Just then, there was a commotion outside and I heard people say that the alien was in the building and about to enter the flat.  Everyone else was huddled in the living room, so it was just me in the toilet by myself.  I heard someone say that I had to keep perfectly still to avoid being detected by the alien, and at this point, I now "knew" he was in the flat.

The last thing I heard before waking up was a loud thud like someone pounding on a door.