Shadows on a character's face in a thriller trailer signify that the character feels uncomfortable in the situation and that something unusual or evil is occurring. Thriller films aim to keep audiences engaged throughout by using techniques like lighting, camera work, set design, and an intriguing plotline.

1. Analysing Thriller Trailers
(Sub Genre)

2. There is shadows on the individuals face to portray the
individuals feelings, he does not feel comfortable in
this situation. It also symbolizes evil and that there is
something unusual going on in the scene. A thriller
films objective is to keep the audience at the edge of
their feet throughout the movie using clever
techniques such as the use of lighting, Mis en scene,
shot type and storyline.