Science has spoken again. For the fourth year running, the 2012 supernatural horror film Sinister sits atop the Science of Scare Project’s annual ranking of the most frightening movies ever made. The study, now in its seventh year, gives the Ethan Hawke vehicle a scare score of 96 out of 100.
How the Project Measures Fear
The Science of Scare Project has evaluated horror movies’ physiological effects on viewers since 2020 by monitoring heart rate and heart rate variability. According to the study’s organizers, a 250-person audience panel watches a curated selection of English-language horror films over several weeks while hooked up to heart monitors. The films come from what researchers call a “Scare List,” built from critics’ best-of lists, expert recommendations, major theatrical releases, online forums, and audience suggestions.
In the project’s early years, rankings relied on how much a film increased average heart rate. Since 2023, researchers have used a more comprehensive “scare score” that combines three metrics: average heart rate, peak heart rate, and heart rate variability. The variability metric tracks the natural variation in time between consecutive heartbeats. In the context of the experiment, a greater drop in variability indicates higher stress levels for audiences, making it a useful measure of slow-burn fear and dread.
Why Sinister Keeps Winning
Directed by Scott Derrickson, Sinister stars Ethan Hawke as a true-crime writer who moves his family into a house where a series of gruesome murders took place. His research leads him to horrific found footage, and the story takes a dark turn from there. The film achieved its 96 scare score with heart rates spiking at 131 beats per minute during its most intense moments.
The movie first claimed the top spot in the inaugural 2020 study. It lost the crown to Host the following year but reclaimed it in 2023 and has not relinquished it since. Host, a Zoom-set horror filmed remotely during the Covid-19 pandemic, sits at number two with a score of 95 and a peak heart rate of 130 beats per minute. The experimental 2022 film Skinamarink rounds out the top three with a score of 91 and a peak of 113 beats per minute.
The Metrics Behind the Rankings
Researchers combine average heart rate, peak heart rate, and heart rate variability to calculate each film’s scare score out of 100. Higher scores indicate a more frightening viewing experience. The average heart rate measures how much the audience’s heart was raised during the runtime compared to their resting baseline. The peak heart rate signals the most scary, stressful, or exciting moments, such as jump scares. The variability drop captures the sustained tension that builds throughout a film.
This year’s study also recorded a new benchmark. Zach Cregger’s 2026 Resident Evil adaptation delivered two record-breaking jump scares where heart rates peaked at 134 beats per minute. However, the comedic tone of the film’s latter portion worked against its overall score, keeping it out of the top rankings.
How the Major Franchises Compare
James Wan’s Insidious (2010) lands at number four, while The Conjuring (2013) sits at number five. Both films posted scare scores between 75 and 90. The more recent Smile (2022) and its sequel Smile 2 (2024) appear at numbers eight and seven respectively, marking a strong showing for the newer franchise.
The study’s full ranking evaluates 50 films total, including older classics like 1974’s The Texas Chain Saw Massacre, 1978’s Halloween, and 1984’s A Nightmare on Elm Street. The top 20 features only titles released in 2005 or later. Five 2026 releases cracked the top 50: Insidious: Out of the Further at 41, the runaway hit Obsession at 35, Backrooms at 47, Hokum, and A24’s Undertone, named the most frightening film of the year so far.
Sources
- This Is The Scariest Movie Of All Time, According To Science
- From ‘Scream’ to ‘Obsession’: What your favorite horror movie may say about you – AOL
- Scariest Horror Films 2026: The 15 most terrifying movies of all time, according to science
Photo: Raph_PH (CC BY 4.0)
