Photo: Canadian Press

Sony Pictures plans to release a "Slender Man" movie this spring, featuring the horror character that inspired two Wisconsin girls to nearly kill their classmate.

The movie is set for a May 18 release. Slender Man has appeared in video games and online stories, but the Sony production marks the first full-length feature built around the character. The picture is directed by Sylvain White, who also helmed 2007's "Stomp the Yard," and stars Javier Botet as Slender Man.

The studio released a trailer Wednesday. It's unclear from the preview whether the movie will include any elements from the Wisconsin case, but in one scene a wall is covered with drawings of Slender Man that resemble sketches one of the girls, Morgan Geyser, drew. Other scenes show Slender Man stalking a girl in the woods and a girl stabbing herself in the head with a scalpel in school, showering a classmate with blood.

Geyser and Anissa Weier lured classmate Payton Leutner to a wooded Waukesha park in 2014. There Geyser stabbed Leutner 19 times, narrowly missing her heart, while Weier urged her on. Leutner managed to crawl out of the woods to a path where a passing bicyclist found her. She survived the attack.

Geyser and Weier told detectives they had to kill Leutner to prove to Slender Man that they were worthy of being his servants as well as protect their families from him. All three girls were 12 years old at the time of the attack.

Geyser, now 15, pleaded guilty to attempted first-degree intentional homicide in a deal with prosecutors, who have asked she get at least 40 years in a mental hospital when she's sentenced in February. Weier, now 16, was sentenced to 25 years in a mental institution last month after pleading guilty to attempted second-degree intentional homicide.

Geyser's attorney, Anthony Cotton, declined to comment on the movie. Weier's attorney as well as a spokesman for Leutner's family didn't immediately reply to emails.

Slender Man has been cited as a factor in other crimes. Days after the Wisconsin stabbing, a 13-year-old girl in Hamilton County, Ohio, attacked her mother with a knife. The mother told WLWT-TV that she thought the girl was obsessed with Slender Man. In September of that same year, a 14-year-old girl in Port Richey, Florida, set her house on fire. Sheriff's deputies said she started the fire after reading an e-book called "Soul Eater" and reading about Slender Man.