Who was the ennemy within?
It's the title of this season after all.
I think about it since some days and wonders to whom the title refers to.
The title is singular so it must point to someone in particular.
I guess the easy take is Bruce being in the Pact since he pretends to be a gangster.
But I mean.. it could refer to a lot of characters too? It could refer to Waller as she's crooked and have dirty methods or even Batman as the point of the last episode is that he creates his ennemies.
The most plausible to me is that it would refer to Joker as he is"trapped" inside John Doe and finally comes out in the end of the season.
What do you think and what's your take on the title?