suspense and shock

Thriller Hitchcock model 

A Hitchcock film often begin with a crime and the accusation of an innocent bystander. The accused could contact the authorities where the problem would usually be solved but instead the poor bystander runs from the law which further puts him/her at risk. An example of this is in 'The 39 Steps' 1935 and 'North by Northwest' 1959. In The 39 Steps the suspense films abandon both thrills and suspense when the falsely accused character finally reaches safety.

Suspense

Suspense is when the audience knows what the characters don't, it is the anticipation of what is going to happen next. An example of this is if there is a class full of students being taught by a teacher and the camera reveals that there is a bomb under the table to the audience but the students and teacher does not. The audience will be anticipating what's going to happen, will we be saved? will the bomb go off? this is the suspense.

Shock

Shock is when the audience does not know what is going to happen. If the class full of students being taught by a teacher does not reveal the bomb under the table but just goes off without warning killing everyone present this is what we would call shock.