Slender Man (2018)

In the fictional small town of Winsford, Massachusetts, Katie Jensen, Hallie Knudsen, and their friends Chloe and Wren have a sleepover at Katie's house. They speculate that the group of boys they saw earlier were planning to summon Slender Man. Featured in urban legends spread throughout the Internet, Slender Man is a supernatural being who lures and abducts innocent children. The four watch a disturbing video that demonstrates how he can be reached.

The following week, on a class field trip, Katie notices a presence in the trees. Shortly after, she disappears without a trace. The police arrive but fail to find her. Hallie, Chloe and Wren examine Katie's laptop for clues. They learn that Katie, who had been unhappily living with her alcoholic father, had become obsessed with the occult, specifically Slender Man sightings. She had contacted a person named Allison Riley regarding methods of reaching the character, who she hoped would provide an escape.

The trio contact Allison, who explains that Slender Man infects people's minds, eventually either driving them completely insane or kidnapping them. To retrieve Katie, they need to perform a ritual to "unveil themselves", which involves surrendering an item special to each of them.

Before the ritual, Wren, who had researched Slender Man mythology, instructs Hallie and Chloe to don blindfolds and avoid looking directly at Slender Man's face, lest they die or go mad. However, during the ritual, Chloe panics and flees, seeing the Slender Man up close. Sometime later, he enters Chloe's house and drives her mad. Wren, suffering from frightening visions, researches further about the figure in the local library, where it attacks her. Hallie attempts to ignore the issue by spending the night with her boyfriend. Meanwhile, Hallie's sister Lizzie suffers a major panic attack and is hospitalized. Examining Lizzie's computer, Hallie discovers that Wren and Lizzie had attempted to contact Slender Man.

Heading to Wren's house to confront her, Hallie finds information that Wren gathered in her bedroom concerning Slender Man and his victims, one of whom was Allison Riley. Hallie sees Wren preparing to commit suicide out of terror and guilt, and dissuades her. Wren tearfully confesses that Lizzie approached her with interest in Slender Man. Wren accompanied Lizzie to the woods, where she offered him her teddy bear. Wren reveals their offerings were insufficient, as Slender Man will only rest once he has seized all of them physically. Suddenly, Slender Man shatters the glass window and kidnaps Wren, pulling her outside with his tentacles appearing in the shape of branches.

Hallie ventures into the woods. Encountering the entity, she pleads for him to take her instead. He obliges and ensnares her, both of them fusing together as a tree. Lizzie awakens in the hospital screaming for her sister, but ultimately makes a successful recovery and reflects on what happened to the quartet.