Bohemian Killing is set in 19th century Paris, but in a very small section of the city. While not giving testimony, you are either locked in a cage in the courtroom or confined to your small cell. When retelling your version of the night of the murder, you are restricted to a small part of the street your apartment is on. This includes the hotel next door where the murder happened and a pub filled with people that apparently really don't like the fact that you are a rich gypsy.
Given the small confines of the game's setting, it should come as no surprise that these locations are filled with a ton of detail that really gives the game a unique look and feel. Decor and technology all have a certain flair that feels right for the game's self-proclaimed "19th century steampunk" setting, though the steampunk aspect seems to be toned down quite a bit.
While the world isn't populated by a lot of characters, those who do appear look to have been as carefully crafted as the environments. Bohemian Killing really does hit the mark in casting a particular visual feel.
While the audio isn't quite on the same level as the graphics, it's not bad. Given the setting, it should be no surprise that all of the dialogue has a thick French accent, and while it only took a runthrough of the game for me to get used to it, there was enough trouble understanding what was being said at the beginning to make me wish the game had subtitles. Instead, a toning down of the Parisian background music and sound effects went a long way to helping out with that particular problem.