This document provides summaries of 5 film trailers that the author found effective: 1. Friday the 13th uses dark shots and diegetic sounds like screams and swinging lamps to build tension and suspense without revealing too much of the plot. 2. The Exorcism of Emily Rose is scary because it claims to be based on a true story, and shots of Emily possessed create fear through the soundtrack. 3. Paranormal Activity 2 uses "real footage" found style to seem realistic and scary, and titles like "you demanded it" build anticipation for the sequel. 4. The Last Exorcism uses red and black colors and tense music to create a dark, scary atmosphere throughout the