'The Black Phone' Star Madeleine McGraw Gets Possessed in 'The Harbinger' [Trailer]

Only death will save her.

Screen Media has premiered the official trailer for the upcoming horror film The Harbinger, which is being billed as a "paranormal Hitchcockian thriller," ahead of the film's release this September.

Starring The Black Phone standout Madeleine McGraw, The Harbinger will be available in select theaters and On Demand on September 2nd.

In the film, "Daniel and Theresa Snyder move their troubled young daughter Rosalie to a quaint Midwestern town. Soon after they arrive, neighbors begin to die. The townspeople suspect Rosalie and shun the Snyder family. Fearing something evil followed them, the tormented parents seek the advice of a Native American seer who tells them that only death can save Rosalie."

"When more people die and a detective starts looking into the mysterious deaths, the Snyders must do whatever it takes to protect their family."

The Harbinger also stars the film's director Will Klipstine (The Evolution of Andrew Andrews), Irene Bedard, Amanda MacDonald and Steve Monroe.

Klipstine co-wrote the screenplay with Amy Mills.