Costumes

I think that the main character will have a suit and a hat on which shows that he is the 'bad guy' because he will be most mysterious and will stand out to the rest however won't be the typical antagonist because he was indeed forced into the murder and we feel sorry for him because everything comes back to haunt him. He will dress like a respectable man. Everyone around would be wearing black to show their respects and also to make them blend in with the background and to not make them too seen to the viewer.