Colonel Mustard in the Ballroom with the Revolver

Mademoiselle Scarlett: "Colonel Mustard, je vous accuse!!" 

This breaks the rules with the only spot of red almost dead center, but still, the eye travels around the piece. I think it is because the revolver is rendered so realistically, that your eye gets pulled to it and then from there to the strong graphic of the card.

I like to break rules.