|Directed by||Akiva Goldsman|
|Music by||Nathan Whitehead|
|Distributed by||Universal Pictures|
Stephanie is a young girl who was abandoned by her parents in their home. With only a toy turtle to talk to, there is also a dark supernatural force watching over her. An apocalyptic event is alluded to on various news broadcasts, but Stephanie channel-surfs past them to watch Despereaux, Equestria Girls and Friendship is Magic. It is revealed that she is keeping the corpse of her brother, Paul, in his bed to occasionally yell at and physically abuse. After they make up, she sometimes holds his cold hand, which squeezes her back. As she does whimsical things like tea parties with stuffed animals, a shadowy figure will menace her, but the scene will end with a jump scare of her waking up in her bed. Stephanie’s parents, Eric and Jane, eventually return and apologize for leaving her. They bury Paul's corpse in the yard and attempt to resume a normal life. Eric keeps a gun in his belt at all times. Jane has large scars across her stomach. That night, Paul's corpse is catapulted through the attic window, causing distress to Eric and Jane, but leaving Stephanie unaffected.
The next morning, Eric asks her to tell them about the day they left. Stephanie and Paul had been carving pumpkins. When Paul teased her and damaged her pumpkin, she broke his neck with her telekinesis. When Jane came to investigate, she was struck across the midsection. Stephanie's telekinesis takes the form of giant invisible octopus tentacles.
Eric and Jane reveal there is no monster: the monster is Stephanie. She was hallucinating the shadowy figure that had been harassing her. Her parents drug her and attempt to perform brain surgery to nullify her powers. Stephanie wakes up and telekinetically destroys the lab. News broadcasts explain that the apocalyptic event is that murderous, telekinetic children like Stephanie have been appearing all over the world, and there is no cure for their powers or murderous urges: they must be killed. Stephanie acts as if nothing has happened the next morning. Eric and Jane poison some hot cocoa intended for her. Eric explains his theory that a force is possessing Stephanie and the other children. When in this state, Stephanie occasionally develops dark patches on her face, lending credence to this theory. Stephanie prepares to drink the cocoa, but her telekinesis autonomously knocks it out of her hand. She moves to attack Eric, and he shoots her several times, seemingly killing her.
Stephanie returns home, unharmed, tortures and kills her parents, and tells them they should've never come back. She telekinetically destroys the house and walks outside, dragging her parents’ corpses and leaving them at Paul's grave. She then drops and steps on her toy turtle, presumably showing that she is now possessed by the force, and destroys all the other houses in the neighborhood. Her shadow is shown to have long tentacles.
The movie ends by zooming out to show the Earth: there are fires all over, showing that the other telekinetic children are similarly wreaking destruction around the world.
Deadline announced that Akiva Goldsman signed on to direct the film and that Blumhouse Productions, Gotham Group, Unbroken Pictures and Matt Kaplan with Chapter One Films would produce. Jason Blum with Blumhouse Productions had a deal with Universal so the film would go through them for distribution. The film was written by Ben Collins and Luke Piotrowski.
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- Jeff Sneider (January 28, 2015). "'Fringe's' Anna Torv, 'Extant's' Shree Crooks Join Frank Grillo in Akiva Goldsman's 'Stephanie'". TheWrap. Retrieved 10 April 2015.
- Anita Busch (June 25, 2014). "Akiva Goldsman To Direct Horror Film 'Stephanie'". Deadline Hollywood. Retrieved April 10, 2015.
- James White (25 June 2014). "Akiva Goldsman Scares Up Stephanie". Empire Online. Retrieved 10 April 2015.
- Collis, Clark (April 18, 2017). "Blumhouse horror-thriller Stephanie to haunt opening night of Overlook Film Festival". Entertainment Weekly. Retrieved April 17, 2018.
- Miska, Brad (March 5, 2018). "Blumhouse's 'Stephanie' Going Direct-to-Video". Bloody Disgusting. Retrieved March 5, 2018.