The conventions of opening thriller sequences:

· Establishes the main characters or themes of the film
· Conventionally begin at a disruption/disequilibrium (Todorov's theory)
· Provide the audience with the conventional opening credits such as:

1. Film title
2. The production company
3. The distributer
4. Director's name
5. Main actors/actresses
6. Other actors/actresses
   

Credits may also also include the following:
· Screenplay by...
· Casting by...
· Edited by...
· Assistant director
· Music by...
· Director of photography
· Set director
· Special effects coordinator
· Cinematographer
· Costume/make up/hair stylists/designers

All of these conventional features should provide the audience with expectations of the whole film and therefore give the audience an idea of whether they will enjoy watching the rest of the film.