Movies Like Step Siblings Caught 21

If you liked Step Siblings Caught 21 (2021), a movie, here are 20 movies with a similar feel, based on TMDB's recommendations. Each one links to its cast, trailer and where it's streaming.

1
The Cement Garden (1993)
★ 6.8/10
After the death of her husband, the mother of Julie, Jack, Sue and Tom begins to suffer from a mysterious illness. Aware that she is going to have to go into hospital she opens a bank account for the children, so that…
2
Happiness (1998)
★ 7.4/10
The lives of several individuals intertwine as they go about their lives in their own unique ways, engaging in acts which society as a whole might find disturbing in a desperate search for human connection.
3
The Long Riders (1980)
★ 6.7/10
The origins, exploits and the ultimate fate of the James gang is told in a sympathetic portrayal of the bank robbers made up of brothers who begin their legendary bank raids because of revenge.
4
Money Train (1995)
★ 5.9/10
When a vengeful New York transit cop decides to steal a trainload of subway fares, his foster brother—a fellow cop—tries to protect him.
5
Bring Her Back (2025)
★ 7.3/10
Following the death of their father, a brother and sister are sent to live with a foster mother, only to learn that she is hiding a terrifying secret.
6
Nymphomaniac: Vol. II (2013)
★ 6.7/10
The continuation of Joe's sexually dictated life delves into the darker aspects of her adult life and what led to her being in Seligman's care.
7
From Dusk Till Dawn (1996)
★ 7.1/10
After kidnapping a father and his two kids, the Gecko brothers head south to a seedy Mexican bar to hide out in safety, unaware of its notorious clientele.
8
Citizen Toxie: The Toxic Avenger IV (2001)
★ 6/10
A horrific explosion creates a dimensional portal between Tromaville and its dimensional mirror image, Amortville. While the Toxie is trapped in the mirror dimension, Tromaville comes under the control of his evil…
9
American History X (1998)
★ 8.3/10
Derek Vineyard is paroled after serving 3 years in prison for killing two African-American men. Through his brother, Danny Vineyard's narration, we learn that before going to prison, Derek was a skinhead and the leader…
10
Martha Marcy May Marlene (2011)
★ 6.6/10
After several years of living with a cult, Martha finally escapes and calls her estranged sister, Lucy, for help. Martha finds herself at the quiet Connecticut home Lucy shares with her new husband, Ted, but the…
11
Shame (2011)
★ 6.9/10
Brandon, a thirty-something man living in New York, eludes intimacy with women but feeds his deepest desires with a compulsive addiction to sex. When his younger sister temporarily moves into his apartment, stirring up…
12
Neds (2010)
★ 6.7/10
NEDs (Non Educated Delinquents) is the story of a young man’s journey from prize-winning schoolboy to knife-carrying teenager. Struggling against the low expectations of those around him, John McGill changes from…
13
Goodnight Mommy (2022)
★ 6.3/10
When twin brothers arrive home to find their mother’s demeanor altered and face covered in surgical bandages, they begin to suspect the woman beneath the gauze might not be their mother.
14
Shades of Desire (2023)
★ 6.5/10
After her twin sister Aubrey goes missing, Jennifer uncovers the scandalous, secret double-life that Aubrey leads - and that has put both of them in danger.
15
Take Me Home Tonight (2011)
★ 6/10
Recent MIT grad Matt Franklin should be well on his way to a successful career at a Fortune 500 company, but instead he rebels against maturity by taking a job at a video store. Matt rethinks his position when his…
16
Porno (2019)
★ 6/10
When a group of naive teens working at a movie theater in a small Christian town discover a mysterious film hidden in its basement, they unleash an alluring succubus who gives them a sex education…written in blood.
17
Hellraiser (1987)
★ 6.9/10
A hedonistic man finds a mysterious puzzle box that summons a group of gruesome beings known as the Cenobites. These otherworldly entities open the doors to a dominion where pain and pleasure are indivisible.
18
Ginger Snaps (2000)
★ 6.9/10
The story of two outcast sisters, Ginger and Brigitte, in the mindless suburban town of Bailey Downs. On the night of Ginger's first period, she is savagely attacked by a wild creature. Ginger's wounds miraculously…
19
Accident Man (2018)
★ 6.3/10
Mike Fallon, the Accident Man, is a stone cold killer. When a loved one is murdered by his own crew, Fallon is forced to avenge the one person who actually meant something to him.
20
Funny Games (2008)
★ 6.5/10
When Ann, husband George, and son Georgie arrive at their holiday home they are visited by a pair of polite and seemingly pleasant young men. Armed with deceptively sweet smiles and some golf clubs, they proceed to…