What hides between Shadow and Light?

[Tommy Gun]

Hi Argoon.
Yeah, i think that all of frictional's games will mention each other, whether it's through the archaic, or a mention of a place in greenland where...etc.

Maybe this was a mention of the game when it was still in the eariliest stages and just a concept, so they could use it as a clue.

i wonder what the O stands for.. anyone think of any penumbra characters begininng with the letter O?