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Beware the Slenderman (2016)

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Tells the story of two 12-year old girls, who attempted to murder one of their friends in an attempt to appease Slenderman, a fictional monster from a horror website.
1 win & 3 nominations. See more awards »



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Cast overview, first billed only:
Morgan Geyser Morgan Geyser ... Herself - Stabbing Suspect
Anissa Weier Anissa Weier ... Herself - Stabbing Suspect
Angie Geyser Angie Geyser ... Herself - Morgan's Mother
Bill Weier Bill Weier ... Himself - Anissa's Father
Michael O. Bohren Michael O. Bohren ... Himself - Judge
Michelle Trussoni Michelle Trussoni ... Herself - City of Waukesha Police Department
Kristi Weier Kristi Weier ... Herself - Anissa's Mother
Payton Leutner Payton Leutner ... Herself - Stabbing Victim (archive footage)
Trevor J. Blank Trevor J. Blank ... Himself - Digital Folklorist
Brad Kim Brad Kim ... Himself - KnowYourMeme.com
Richard Dawkins Richard Dawkins ... Himself - Evolutionary Biologist
Jack Zipes Jack Zipes ... Himself - Literary Critic
Tom Haynes Tom Haynes ... Himself - Anissa's Former Teacher
Abigail Baird Abigail Baird ... Herself - Neurodevelopmental Psychologist
Tyler Tyler ... Himself - Former Fellow Inmate


Lurking in the shadows of the Internet, a faceless modern-day bogeyman has attracted the attention and fear of a young generation who whisper his name online. Slenderman lives on the dark pages of the web, where impressionable youth create and cultivate his mythos in message boards, YouTube clips and various other digital incantations. But the online fairy tale becomes a shocking real-life horror as two 12-year-old girls, guided by their devotion to Slenderman, lure their friend into the woods to attempt a seemingly inexplicable, brutal murder. From the depths of one the Internet's most unsettling creations to the court case that must consider the consequences, Beware the Slenderman brings to light questions of accountability in an age where young, growing minds are only a few clicks away from creating and consuming something that may influence them to commit unspeakable crimes.

Plot Summary | Add Synopsis

Plot Keywords:

internet | girl | stabbing | meme | child | See All (20) »


On May 31st, 2014, in the woods outside of Waukesha, Wisconsin, two 12-year-old girls stabbed their classmate 19 times. This is the true story of what drove them to do it.



Parents Guide:

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Release Date:

26 August 2018 (Sweden) See more »

Also Known As:

Cuidado com o Slenderman See more »

Company Credits

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Technical Specs



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Did You Know?


Although the stabbing took place in Waukesha County (Waukesha). Anisa is being held further north in adjoining Washington County (West Bend). See more »


During Trevor J. Blank's interview (at the 28:18 mark), footage is shown of the popular Youtube series "WATCHER" by Andrew J. Neis. "WATCHER" is not a Slenderman-related series, it features a human stranger that stands outside of a couple's apartment window and stares at them, never moving or speaking. The creators of "Beware the Slenderman" appear to have digitally edited the video to remove the face of the "WATCHER" character and make it appear as though it could possibly be a real-life Slenderman. See more »


Herself - Stabbing Suspect: Make sure she's down.
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Features Watcher (2011) See more »


Rising Walls
Music by Myuu
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User Reviews

Important look at the psychology of a horrific crime
23 June 2017 | by whitneyspottsSee all my reviews

It seems to me most of the people who don't like this movie feel that way simply because they think these girls are "evil".

I DO have sympathy for these girls because I am very familiar with schizophrenia and schizo-typo mental disorders, and can see beyond the black/white dichotomy of good and evil that people like to cling to. I thought the interviews with the parents were crucial in establishing the mind-frame of the kids at the time, as well as showing the guilt and anguish that a parent feels in the aftermath of your child committing a brutal crime. Never did I feel like the film was excusing the horrific nature of the crime, but trying to draw out how it ended up happening in the first place.

I know that people have voiced criticism that there was little on the victim - that is because the victim's family declined to participate (totally within their rights, and totally understandable). But the fact of the matter is, with cases like these, the important part is to study the perpetrators -- how do you prevent horrors like this from happening if you don't understand HOW they came to happen?

Personally, I thought the section about urban folklore, and how it can multiply rapidly on the internet to be really interesting.

I'm a true crime doc, and I thought this was well done.

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