The document discusses several conventions that are commonly used in thriller films and how they are employed or challenged in the author's opening sequence. It addresses conventions like setting stories in cities, including protagonists that solve mysteries, using low-key lighting, incorporating costumes to identify good or bad characters, and maintaining an element of mystery. The summary then analyzes how the author's sequence specifically conforms to conventions like slow pacing, using title sequences and ident, and close-ups to convey emotion, or challenges conventions through omitting an establishing shot and choosing to hide the location. Mise-en-scene elements are also discussed.