In the Tall Grass is a 2019 Canadian supernatural horror drama film written and directed by Vincenzo Natali.

The project was in initial development in early 2015, and went forward in May 2018, when streaming service Netflix announced that it had purchased the film rights, setting Natali to direct and adapt the screenplay.

While stopping along the way, they hear cries for help from a young boy named Tobin, who is accompanied by his mother, Natalie, in the tall grass.

Tobin claims the grass won't move dead things and buries the bird in the path, telling Cal that a rock told him Becky would die soon.

When Tobin leads Cal to a rock in the field and tells him to touch it, he hears Becky's scream before a ghost attacks him.

As a result, Becky and Cal traveled to San Diego to meet a family interested in adopting her baby when it was born as she did not feel ready to be a single parent.

The grass seemingly enters Becky's uterus, and she passes out, only to be revived by Ross, who then reunites with Tobin and says he will show them out.

As she screams in pain from contractions, the ground underneath the rock opens, revealing multiple roots that turn into humanoid figures reaching toward her.

"[4]On May 7, 2018, it was announced that Netflix would adopt the short story, with Natali hired to write and direct, and Steve Hoban, Jimmy Miller, and M. Riley producing.

[5][6][7] On May 28, 2018, Natali announced that manga artist Shintaro Kago would design the concept art for the film adaptation.

[5] On August 7, 2018, it was announced that Marsden had bowed out of the film due to scheduling conflicts and been replaced with Patrick Wilson.

Additionally, it was reported that Laysla De Oliveira, Harrison Gilbertson, Avery Whitted, Rachel Wilson, and Will Buie Jr. had also joined the cast.

[11] On July 24, 2018, it was reported that a dilapidated church set had been constructed for the film on a rural road in Perth South, Ontario.

The website's consensus reads: "A potentially intriguing premise is rapidly lost in the weeds during In the Tall Grass which struggles to stretch its slim source material to feature length.