"The primary elements of the thriller genre:
- The protagonist(s) faces death, either his and/or her or somebody else's.
- The force(s) of the antagonist's must initially be cleverer and/or stronger than the protagonist's.
- The main storyline for the protagonist is either a quest or a character that cannot be put down.
- The main plotline focuses on a mystery that must be solved.
- The film's narrative construction is dominated by the protagonist's point of view.
- All action and characters must be credibly realistic or natural in their representation on screen.
- The two major themes that underpin the thriller genre are the desire for justice and the morality of individuals.
- One small, but significant, aspect of a thriller is the presence of innocence in what is seen as an essentially corrupt world.
- The protagonist(s) and antagonist(s) may battle, themselves and each other, not just on a physical level, but on a mental one as well.
- Either by accident or their own curiousness, each character is dragged into a dangerous conflict or situation that they are not prepared to resolve. "
From this research, I can see that we will need to choose a subgenre that will help us to determine the way we make our opening sequence. It is clear that building tension is very important but it is also important to have a sense of mystery that keeps the watcher hooked and interested.