Narrative

Narrative shows the way that the story is being put together. It shows the audience how the events are being put together, so the audience gains a better understanding of what is happening in the thriller.

Enigma Code
An enigma code asks the audience a question.
Who is she/he?
What are they doing?
Why are they doing that?
What is happening?

Enigma codes are a narrative to show the audience needed information. Highlighted parts within a thriller that take an unexpected turn to create a overall impact by the end of the film.
The enigma code won't be answered until the end of the film, this makes the audience want to watch the film for longer as they are intrigued in finding out more.
The audience will be curious about what is going to happen, the enigma code also provides mystery to audience, it also allows them to discover new things as the thriller progresses and gives an example of something new about the character or plot.
Linear
Shows a clear beginning, middle and end.
Non Linear
Is where it shows flash backs of what the character has gone through in their past. This helps the audience get a better understanding of the character. It also gives the audience a reason to watch till the end, to see if its effected the character in anyway and if so did it effect the ending.
Restrictive
The audience only knows what the characters know, so will not know the ending of the film. Near the end of the film the audience will be given hints to what has been going on but still won't truly understand.
Omniscient
Omniscient shows the audience who the protagonist (murderer, detective) from the start. Even though the audience see everything from the start and know what the end result is going to be, they might not always know when other events are going to take place.