Ethan Hawke’s 109-Minute Horror Scientifically Proven as the Scariest Movie Ever Is a Major Streaming Hit

Every horror fan has a personal pick for the scariest movie ever made. But what if science could end that debate once and for all? As it turns out, it already has. Scott Derrickson’s 2012 chiller Sinister, starring Ethan Hawke, has been named the scariest movie of all time by the Science of Scare Project.

It is a yearly study by MoneySuperMarket Broadband that tracks how horror films affect real viewers’ hearts. The 109-minute film beat genre heavyweights like Host, Insidious, and The Conjuring to claim the crown in 2025. And audiences seem to be taking that title seriously.

With spooky season in full swing, Sinister is pulling in viewers all over again and has climbed into the top five most-watched movies on Lionsgate+ worldwide. More than a decade after its release, the Blumhouse nightmare clearly hasn’t lost its bite.

Ethan Hawke’s Scariest Horror Movie Is No. 4 on Lionsgate+

According to FlixPatrol, Sinister is sitting at No. 4 on Lionsgate+’s global movie chart as of October 4, 2026. The list also includes spooky season’s all-time favorite picks, like the Halloween franchise movies, 1997’s Wishmaster, John Cusack and Samuel L. Jackson’s 1408, and Saw.

With Halloween just weeks away, it’s no shock that horror has taken over the chart. Half of the list is made up of scary movies, and Sinister is right in the middle of that pack, climbing as fans line up their October watchlists.

For those who haven’t seen it, the film follows Ethan Hawke’s Ellison Oswalt, a true crime writer desperate for another hit after years of flops. He quietly moves his family into a house where the previous owners were found hanged in the backyard, and he doesn’t tell his wife.

In the attic, Ellison finds a box of old Super 8 reels that look like harmless home movies. Each one actually shows a different family being killed. As he keeps digging, he spots the same eerie figure in every reel, a clue that leads him to an ancient pagan entity called Bughuul.

Beneath the scares, Sinister is a story about obsession and ambition. Ellison chooses fame over his family’s safety, and the film quietly asks how much damage we are willing to cause just to tell a good story.

Why Ethan Hawke’s Sinister Outperforms All Horror Movies

Ethan Hawke in a still from Sinister | Credits: Blumhouse Productions

So how exactly does science decide what’s scary? The Science of Scare Project invites a panel of 250 people to watch a shortlist of horror films while wearing heart rate monitors. The team tracks two things: how fast hearts beat and how much the gap between beats shrinks.

The second measure, known as heart rate variability (HRV), drops when people feel stressed, which makes it a great way to catch slow-building dread rather than just jump scares. Both numbers are then combined into a Scare Score out of 100. Notably, Sinister earned a massive 96.

Viewers’ average heart rate jumped by 34 percent, rising from a resting 64 BPM to 86 BPM, and peaked at 131 BPM during its most terrifying moment. Their HRV also fell by 21 percent, the second-biggest drop on the list. That mix of sudden shocks and creeping unease is what pushed it past horror thrillers like Host and Skinamarink.

The film’s unsettling score and its blend of true crime and the supernatural are a big part of its power. Many fans still can’t shake the infamous lawnmower scene.

The list isn’t perfect, though, as classics like The Blair Witch Project and The Exorcist didn’t make the top 10. Still, when it comes to raw fear, Sinister has the numbers to back it up.

Are you going to watch Ethan Hawke’s scariest horror movie this Halloween? Let us know in the comments below!