Talking about a picture

This is a picture of the famous film "Batman: the dark night".

It´s looks like Batman and theJjoker are in an interrogation room because of the tipical interrogation light of the foreground and the lack of furniture. You can see a big window/mirror as the ones the police use to use in the backgrond .So he might be interrogating him.

The joker looks calm and even enjoying the situation while batman looks completely wrathful, probably because there are innocent people's lives at stake 

I suppose that the joker has been caught cometing a crime or perhaps planning one so Batman it´s trying to get information from him, maybe , because of the way he´s looking at him, not in a polite way.