The opening sequence of the film Se7en effectively sets the tone for the mystery thriller genre. It uses slow, faded coloring and low key lighting to create an eerie and uncomfortable atmosphere, implying there will be dark themes throughout the plot. Extreme close-ups of disturbing images like guns and blades enhance this atmosphere of gore and horror, keeping the audience on edge. By only showing hands and lacking identifying details about characters, the opening establishes a sense of mystery and uncertainty that is a popular convention in thrillers. While not breaking conventions, the inconsistent timing, framing, colors and angles take the audience out of their comfort zone and increase tension, priming them for unexpected jumps.