Let me in trailer and structural timeline

Equilibrium: School assembly
Moment of dis equilibrium: Child is bullied at 12 secs non diegetic music is introduced
Conflict: At 46 secs hear a bang and extreme close up of child's eyes evokes fear
Tone cards: At 36 secs "Something wicked lives" this creates doubt of disequilibrium and the sense of something is going to go wrong.
Disequilibrium continues: Screams dark gloomy images with night vision used and fast music played and loud bang repeats.
Last shot: jump cuts used, fast non diegetic souns and extreme close - up of man's eyes near door creates doubts in audience and generates fear.