For this post, I look to the master of suspense, Alfred Hitchcock. I recently read an article which described some of the suspense elements he used in his movie, The Birds.
Here is an excerpt:
"The movie is filled with constant thrill and is full of ambiguities. Building expectation and increasing anxiety are used effectively to manipulate the audience. In this technique, the audience is given information and is educated of the impending fate of the character, while the character is left in the dark. The whole fate is not yet known, however they are aware of imminent danger and what could possibly happen to that character. This creates a lot of tension in the audience, as they are aware of what is going to happen, while they watch the identified character walk straight into a trap.
"For instance, it makes the viewer want to scream out 'Don't do it!' It also makes the audience think whether the character will survive or not. The thriller aspect is extensively used in this movie where it is made quite predictable that the birds are the anti-social elements and are up to some harm. The audience is fully aware and is able to make quite accurate assumptions about the fate of Melanie." To read the rest of the article, check out God created light, Alfred Hitchcock knew how to put it off