Movies Like Side Effect
If you loved Side Effect's Horror and Thriller storytelling, these films deliver a similar experience — carefully selected for tone, themes, and emotional depth. Each pick includes where to watch it right now.
★ Top Picks

A Nightmare on Elm Street 3: Dream Warriors
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.

Oculus
A woman tries to exonerate her brother's murder conviction by proving that the crime was committed by a supernatural phenomenon.

The Night Walker
A woman is haunted by recurring nightmares, which seem to be instigated by her late husband who supposedly was killed in a fire.

Together
Years into their relationship, Tim and Millie find themselves at a crossroads as they move to the country, abandoning all that is familiar in their lives except each other. With tensions already flaring, a nightmarish encounter with a mysterious, unnatural force threatens to corrupt their lives, their love, and their flesh.

Stir of Echoes
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.

6 Souls
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.

The Ritual
Two priests, one in crisis with his faith and the other confronting a turbulent past, must overcome their differences to perform a risky exorcism.
More Movies Like Side Effect

The Entity
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.

Lights Out
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.

Daddy's Head
A boy and his stepmother fear for their safety after an eerie creature resembling the boy's recently deceased father visits them.

Bagman
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.

Ghostland
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...

Fear of Rain
A teenage girl living with schizophrenia begins to suspect her neighbor has kidnapped a child. Her parents try desperately to help her live a normal life, without exposing their own tragic secrets, and the only person who believes her is Caleb – a boy she isn’t even sure exists.

Never Let Go
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.

The Exorcist
When a mysterious entity possesses a young girl, her mother seeks the help of two Catholic priests to save her life.

Paranormal Activity
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.

The Butterfly Effect
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.

The Prodigy
A mother concerned about her young son's disturbing behavior thinks something supernatural may be affecting him.

Midsommar
Several friends travel to Sweden to study as anthropologists a summer festival that is held every ninety years in the remote hometown of one of them. What begins as a dream vacation in a place where the sun never sets, gradually turns into a dark nightmare as the mysterious inhabitants invite them to participate in their disturbing festive activities.
Why These Movies Are Similar
These recommendations share core qualities with Side Effect (2020): Horror and Thriller themes, similar narrative structure, and comparable emotional depth. NoBadPicks uses a combination of TMDB collaborative filtering, genre matching, and AI analysis to surface films most likely to resonate with fans of Side Effect.
See full details for Side Effect (2020)
