The document discusses the key elements and conventions of the thriller genre that should be included in an opening title sequence. It notes that thrillers typically use suspense, tension, mystery and crime themes. Common characters include criminals and police/investigators. Imagery generally uses normal costumes and props, while lighting is low to create a dark, tense atmosphere. Fonts, locations, and sounds are also discussed as important conveying elements of fear, danger and mystery to identify the sequence as a thriller. The document concludes that an effective thriller opening would create suspense through crime/danger depictions and use of dark colors, lighting and harsh sounds.