Movies like Side Effect
If Side Effect hooked you with its horror and thriller, these are the films to watch next. Every pick says why it matches.
Stir of Echoes (1999)
After being hypnotized by his sister-in-law, Tom Witzky begins seeing haunting visions of a girl's ghost and a mystery begins to unfold around her.
Why it matches: Recommended by TMDB viewers · both horror & thriller
Popcorn FlickMovies like thisA Nightmare on Elm Street 3: Dream Warriors (1987)
A psychiatrist, familiar with the knife-wielding dream demon Freddy Krueger, helps teens at a mental hospital battle the killer who is invading their dreams.
Why it matches: Recommended by TMDB viewers · both horror & thriller
Popcorn FlickMovies like this6 Souls (2010)
A female forensic psychiatrist discovers that all of one of her patient's multiple personalities are murder victims. She will have to find out what's happening before her time is finished.
Why it matches: Recommended by TMDB viewers · both horror & thriller
Popcorn FlickMovies like thisBagman (2024)
For centuries and across cultures, parents have warned their children of the legendary Bagman, who snatches innocent children and stuffs them into his vile, rotting bag—never to be seen again. Patrick McKee narrowly escaped such an encounter as a boy, which left him with lasting scars throughout his adulthood. Now, Patrick’s childhood tormentor has returned, threatening the safety of his wife Karina and son Jake.
Why it matches: Recommended by TMDB viewers · both horror & thriller
Popcorn FlickMovies like thisThe Entity (1982)
A single mom is raped by an invisible force. Her psychiatrist believes the experience stems from childhood trauma, while she knows something supernatural is at play.
Why it matches: Recommended by TMDB viewers · both horror & thriller
Popcorn FlickMovies like thisBarbarian (2022)
In town for a job interview, a young woman arrives at her Airbnb late at night only to find that it has been mistakenly double-booked and a strange man is already staying there. Against her better judgement, she decides to stay the night anyway.
Why it matches: Recommended by TMDB viewers · both horror & thriller
Popcorn FlickMovies like thisThe Conjuring (2013)
Paranormal investigators Ed and Lorraine Warren work to help a family terrorized by a dark presence in their farmhouse. Forced to confront a powerful entity, the Warrens find themselves caught in the most terrifying case of their lives.
Why it matches: Recommended by TMDB viewers · both horror & thriller
Worth the HypeMovies like thisGothika (2003)
After a car crash, criminal psychologist Dr. Miranda Grey regains consciousness only to find that she's a patient in the same mental institution that currently employs her. She's been accused of murdering her husband Dr. Douglas Grey — but she has no memory of committing the crime. As she tries to regain her memory and convince her co-worker, Dr. Pete Graham, of her innocence, a vengeful spirit uses her as an earthly pawn, which further convinces everyone of her guilt.
Why it matches: Recommended by TMDB viewers · both horror & thriller
Popcorn FlickMovies like thisInsidious: Out of the Further (2026)
Gemma, a young mother raising her daughter in the house she grew up in, discovers she can travel into The Further, where she possesses an ability to bring what lives there back to the real world.
Why it matches: Recommended by TMDB viewers · both horror & thriller
Worth the HypeMovies like thisThe Endless (2017)
Two brothers return to the cult they fled from years ago to discover that the group's beliefs may be more sane than they once thought.
Why it matches: Recommended by TMDB viewers · both horror & thriller
Popcorn FlickMovies like thisLights Out (2016)
Rebecca must unlock the terror behind her little brother's experiences that once tested her sanity, bringing her face to face with a supernatural spirit attached to their mother.
Why it matches: Recommended by TMDB viewers · both horror
Popcorn FlickMovies like thisOculus (2014)
A woman tries to exonerate her brother's murder conviction by proving that the crime was committed by a supernatural phenomenon.
Why it matches: Recommended by TMDB viewers · both horror
Popcorn FlickMovies like thisPassenger (2026)
After a young couple witnesses a gruesome highway accident, they soon realize they did not leave the crash scene alone, as a demonic presence called the Passenger that won't stop until it claims them both turns their van life adventure into a nightmare.
Why it matches: Recommended by TMDB viewers · both horror
Worth the HypeMovies like thisNever Let Go (2024)
As an evil takes over the world beyond their front doorstep, the only protection for a mother and her twin sons is their house and their family’s protective bond.
Why it matches: Recommended by TMDB viewers · both horror
Popcorn FlickMovies like thisDaddy's Head (2024)
A boy and his stepmother fear for their safety after an eerie creature resembling the boy's recently deceased father visits them.
Why it matches: Recommended by TMDB viewers · both horror
SnoozefestMovies like thisParanormal Activity (2009)
After a young, middle-class couple moves into what seems like a typical suburban house, they become increasingly disturbed by a presence that may or may not be demonic, but is certainly the most active in the middle of the night.
Why it matches: Recommended by TMDB viewers · both horror
Popcorn FlickMovies like thisMirrors (2008)
An ex-cop and his family are the target of an evil force that is using mirrors as a gateway into their home.
Why it matches: Recommended by TMDB viewers · both horror
Popcorn FlickMovies like thisGhostland (2018)
A mother of two inherits a home from her aunt. On the first night in the new home she is confronted with murderous intruders and fights for her daughters’ lives. Sixteen years later the daughters reunite at the house, and that is when things get strange...
Why it matches: Recommended by TMDB viewers · both horror
Worth the HypeMovies like thisThe Butterfly Effect (2004)
A young man struggles to access sublimated childhood memories. He finds a technique that allows him to travel back into the past, to occupy his childhood body and change history. However, he soon finds that every change he makes has unexpected consequences.
Why it matches: Recommended by TMDB viewers · both thriller
Worth the HypeMovies like thisCobweb (2023)
Eight year old Peter is plagued by a mysterious, constant tapping from inside his bedroom wall—one that his parents insist is all in his imagination. As Peter's fear intensifies, he believes that his parents could be hiding a terrible, dangerous secret and questions their trustworthiness.
Why it matches: Recommended by TMDB viewers · both horror
Popcorn FlickMovies like thisVine Trailer (2021)
Why it matches: Similar story and style · both thriller & horror
Ring (1998)
A mysterious video has been linked to a number of deaths, and when an inquisitive journalist finds the tape and views it herself, she sets in motion a chain of events that puts her own life in danger.
Why it matches: Similar story and style · both horror & thriller
Worth the HypeMovies like thisParty Monster (2003)
The New York club scene of the 80s and 90s was a world like no other. Into this candy-colored, mirror ball playground stepped Michael Alig, a wannabe from nowhere special. Under the watchful eye of veteran club kid James St. James, Alig quickly rose to the top... and there was no place to go but down.
Why it matches: Similar story and style · both thriller
SnoozefestMovies like thisNovember (2004)
Sophie Jacobs is going through the most difficult time of her life. Now, she just has to find out if it's real.
Why it matches: Similar story and style · both thriller
SnoozefestMovies like thisPaty (2026)
During a night commute home, a woman finds herself trapped in a dangerous situation at a bus stop. The apparent dead end catches the attention of a mysterious clown, who decides to intervene in her own way.
Why it matches: Similar story and style · both horror
Donde la mañana nunca llega. (TBA)
A group of teenagers spend their last night together in an isolated cabin in rural. As the night progresses, the silence of the surroundings and the growing sense of isolation begin to fracture their relationships. What starts as a simple gathering slowly turns into an experience that will leave lasting marks on those who survive the night
Why it matches: Similar story and style · both horror
Guitar Men: The Darkest Secret of Rock 'n Roll (2007)
Tough contract killers and secret organizations operating worldwide in a murderous battle for a relic that hides much more than just a simple instrument. The merciless hunt for the guitar of the "King of Rock'n Roll" leaves a trail of violence and death in its wake.
Why it matches: Similar story and style · both thriller
Payback (1999)
With friends like these, who needs enemies? That's the question bad guy Porter is left asking after his wife and partner steal his heist money and leave him for dead -- or so they think. Five months and an endless reservoir of bitterness later, Porter's partners and the crooked cops on his tail learn how bad payback can be.
Why it matches: Similar story and style · both thriller
Popcorn FlickMovies like thisEastern Promises (2007)
A Russian teenager living in London dies during childbirth but leaves clues in her diary that could tie her child to a rape involving a violent Russian mob family.
Why it matches: Similar story and style · both thriller
Worth the HypeMovies like thisSacred 2 (2022)
A group of young people from Jakarta left for Cirebon with different destinations. Arla, Jojo, and Maura want to do research on their final assignment, which is assisted by a documentary filmmaker named Umay. Meanwhile, Ajil and Keanu are horror YouTubers who create content to maintain their existence. Their journey becomes wild and uncontrollable after meeting Ute, an indigo who has a secret agenda.
Why it matches: Similar story and style · both horror
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Frequently asked questions
What are the best movies like Side Effect?
The closest matches to Side Effect are Stir of Echoes, A Nightmare on Elm Street 3: Dream Warriors, 6 Souls.
How are movies similar to Side Effect chosen?
First come films that Trakt’s viewers watch alongside Side Effect, then TMDB’s recommendations and films it rates as similar in story and genre. Each pick says which signal put it there.