This episode explores what distinguishes horror from adjacent genres like the thriller by examining the specific cinematic techniques and thematic elements that define it, focusing on how film uniquely manipulates image, sound, perspective, and narrative to create sustained unease and fear. Horror relies on the strategic withholding of information through lighting, shadow, framing, camera angles, depth of field, editing, and point of view to heighten tension and suggest unseen threats, while sound—both diegetic and non-diegetic, including dissonant music, nonlinear noise, and low-frequency tones—works in tandem with visuals to provoke physiological and emotional discomfort. These formal techniques support recurring horror themes such as the supernatural, monstrosity, duality, obsession, revenge, transformation, isolation, and humanity’s desire to control nature or transgress moral boundaries. Whether through tragic victims, invasive monsters, psychological killers, or forces rooted in culture, religion, or science, horror consistently seeks not just to thrill, but to disturb—using atmosphere, ambiguity, and fear itself as its defining currency.