Top 10 Scariest Movies According to Science of Scare Project and Where to Watch

The horror genre continues to evolve and captivate audiences around the world. Over the last few decades, it has emerged as one of the most profitable genres in Hollywood, largely thanks to innovative production companies like Blumhouse, A24, and NEON. These studios have given a platform to a new generation of filmmakers, allowing them to explore their unique perspectives on fear and horror. The cultural significance of terrifying tales has never been more pronounced, prompting ongoing interest and inquiry into the psychology of fear.

Moreover, as technology advances, society becomes increasingly skeptical of traditional fears. This has led to important discussions about what truly frightens us today, a question addressed by the Science of Scare Project from New York University. Through a scientific approach, this project analyzes various horror films to determine their effects on viewers, employing heart rate measurements to gauge which movies elicit the most terror. This thorough examination of fear encapsulates a wide array of horror sub-genres, from violent gore to psychological dread, helping us understand contemporary anxieties surrounding death, pain, and loss.

The following list presents ten of the most terrifying films according to the Science of Scare Project, updated for 2025. Each entry not only showcases the range of horror available but also details the platforms where you can stream these films, allowing you to explore these haunting experiences for yourself.

Sinister (Apple TV+)

Released in 2012, Sinister has been dubbed the most frightening film ever made by the Science of Scare Project. Directed by Scott Derrickson, it follows a true-crime writer, played by Ethan Hawke, who uncovers a terrifying mystery involving a series of gruesome murders. As he delves deeper into the story, he unknowingly connects with a malevolent supernatural entity.

This film stands out for its escalating tension and intricate storytelling, blending elements of mythology with horror. The psychological unraveling of the protagonist serves as a gripping exploration of obsession and the consequences of unearthing dark secrets. If you’re drawn to psychological horror intertwined with supernatural elements, Sinister is a must-watch.

Be Careful Who You Call (Filmin)

In the midst of the pandemic, director Rob Savage turned the claustrophobic atmosphere of quarantine into a unique horror narrative. Utilizing Zoom, he created an eerie connection between his characters and the supernatural in Be Careful Who You Call. What begins as a casual online get-together escalates into a horrifying experience as a group inadvertently summons a sinister presence.

This film masterfully exploits minimalistic resources and the relatable setting of remote communication, making it an excellent choice for fans of unconventional horror. Its ability to turn a mundane online chat into a thrilling and terrifying experience showcases the potent fear of isolation and the unknown.

Skinamarink: The Awakening of Evil (Filmin)

In Skinamarink, the directorial debut of Kyle Edward Ball, viewers experience a uniquely disorienting horror narrative that unfolds within the confines of a single house. The story centers on two children who wake up to find their father missing and their home transformed into a nightmarish landscape. The film's experimental approach prioritizes atmosphere over traditional storytelling, creating a sense of unease and dread.

Instead of clear explanations, the film offers fragmented glimpses into a nightmarish reality, leaving viewers to piece together the horror. Skinamarink exemplifies how minimalism can evoke profound fear, making it a standout in the genre.

Insidious (Available for Rent)

Directed by James Wan, Insidious explores themes of familial trauma and the supernatural. This 2010 film immerses viewers in the haunting experiences of a family plagued by malevolent spirits. Wan's ability to create an unsettling atmosphere has solidified his status as a master of horror.

The film's unpredictability and intricate lore have spawned a successful franchise, with each installment expanding on the original's chilling narrative. The first film remains a classic, expertly blending horror with emotional depth, offering a fresh take on the genre.

The Conjuring (HBO Max)

Another notable entry from James Wan, The Conjuring (2013) has become one of the most successful horror franchises to date. This film introduces audiences to the real-life paranormal investigators Ed and Lorraine Warren, portrayed by Patrick Wilson and Vera Farmiga. Their investigation into a haunted farmhouse becomes a chilling exploration of evil forces at work.

What sets The Conjuring apart is its masterful blend of compelling storytelling, stellar performances, and a carefully crafted atmosphere that keeps viewers on edge. The film's success has led to several sequels and spin-offs, reaffirming its place in the pantheon of modern horror.

The Devil's Legacy (Prime Video)

Ari Aster's The Devil's Legacy presents a harrowing exploration of grief, trauma, and the supernatural entwined with cult themes. The film follows a family beset by tragedy and an ancient curse that threatens to claim another victim. Aster's ability to evoke discomfort and tension makes this film a remarkable entry in contemporary horror.

Beyond its plot, the film delves into deep psychological themes, offering a haunting portrayal of familial bonds and the devastating effects of unresolved trauma. It stands as a testament to the evolving nature of horror cinema and its capacity to address complex emotional landscapes.

Smile 2 (SkyShowtime)

In a rare occurrence, a sequel surpasses its predecessor, as seen in Smile 2. Directed and written by Parker Finn, this film expands on the universe established in the original. This time, the entity that tormented the characters returns, seeking out Skyle Riley, a struggling pop singer.

The film escalates the tension as Skyle’s reality blurs with her nightmares, leading to a thrilling experience that keeps viewers guessing. Combining elements of horror and psychological drama, Smile 2 is an excellent option for fans of intense and well-crafted terror.

Smile (Sky Showtime)

The original Smile, released in 2022, laid the groundwork for its sequel. It tells the story of Rose, a psychiatrist haunted by the suicide of a patient who leaves behind a disturbing curse. The film captures the descent into madness as Rose grapples with an invisible enemy feeding on her fears.

With its unique premise and chilling atmosphere, Smile effectively portrays the psychological aspects of horror, making it a standout in modern horror cinema.

The Exorcism of Emily Rose (Available for Rent)

Another notable film from director Scott Derrickson, The Exorcism of Emily Rose is based on a true story involving a priest charged with negligence after a young woman dies during an exorcism. This film explores the intersection of faith, science, and the supernatural.

Through its thoughtful narrative, The Exorcism of Emily Rose raises questions about the nature of evil and society's struggle to comprehend forces beyond our understanding. This captivating film has become a cult classic, solidifying its place as one of the most terrifying films in cinematic history.

Talk to Me (Prime Video)

Debuting from the talented siblings and YouTubers Michael and Danny Philippou, Talk to Me mixes themes of grief, death, and the obsession with fame in a chilling narrative. The story follows Mia, a teenager coping with her mother’s death, who participates in a macabre ritual to communicate with the dead.

As Mia delves deeper into this unsettling world, she discovers the horrifying consequences of her actions. The film serves as a haunting exploration of loss and the lengths to which people go to connect with those they've lost.

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