She said because he's corrupt he wouldn't necessarily show it (when I talked about ripping his clothes a little or having his clothes a tad dirty)
maybe something subtle like an out of place tie.
She said maybe look at other characters who have a split personality and how they show who is who.
The main character in Deadly premonition is played as his altar ego Agent York, but near the end of the game when his alata ego is no longer needed his real self comes out who has a scratch over one eye (do to what happened in child hood) and white hair.
Do you think this maybe an interesting route to look at?