004 - Dark

So I've been trying this 100 themes challenge to give myself inspiration x.x
I might not post all 100 pictures but, we'll see.

As the title says this is for theme number 4: Dark.
I'm not really sure what Nick and Ellis are doing... most likely walking through an alley way or in some sewer. Nick doesn't want Ellis to get lost so he tells him to stay close. I guess that's Ellis' definition of close.

I wonder what they're talking about.

Nick, Ellis (c) Left 4 Dead 2, Valve