Thank you so much GuruBlue for wonderful suggestion. However, I have to depict one of these existential themes: Man is conscious subject, Anxiety, Absurdity, Nothingness, Death, and Alienation.

Tim, thought that idea would fit into "absurdity" pretty well. They are fighting to get out the door into 'nothingness'.

hmmm... Ok... think about this one. Take the theme of Lady or the Tiger. ONLY - the Lady is in a Tiger mask and the Tiger is in a Lady mask... there is both anxiety and absurdity and perhaps death..... all based on a decision that is based on lies.