The "creep" is a reflection from the building on the other side. If you watch carefully you'll see that they have some carboard thing inside the window that makes the reflection more visible in that corner. I actually did not notice the reflection while setting up the shot (late at night), but I saw it in the LCD after the exposure. So I re-framed it to make it look like he's peeking from the window... It really does not have anything to do with the circle theme... but I like the effect.
