Deadline reports Heather Graham is attached to star in Entity Within, a new movie based on the infamous Doris Bither haunting of 1974 at Alliance Media Partners (the same the studio that brought you the 2023 Graham horror vehicle, Suitable Flesh). Intended to be sold off at the Cannes Market, this new take on the subject co-stars Mimi Rogers (Ginger Snaps, The Rapture, The X-Files, Full Body Massage, etc.), Morgan Peter Brown (Absentia), and Kevin Keppy (Smile), and hails from director Nick Simon (The Girl in The Photographs) and Saw IV writer Thomas Fenton. In the words of AMP’s Anthony Bruckner, “We’re thrilled to be working with Heather Graham again and partnering with Nick Simon to bring Entity Within to Cannes. This is a high-concept, emotionally resonant horror film that we’re excited to share with international buyers.” For those unfamiliar with the story, Bither claimed she was, on more than one occasion, sexually assaulted by an invisible and vocally misogynistic spirit, attracting the attention of parapsychologists as well as Audrey Rose author Frank De Felitta. Felitta recounted the case in his 1978 novel, The Entity, which was later adapted for the screen by Sidney J. Furie in a 1982 film of the same name starring Barbara Hershey. If you haven’t seen it, it’s amazing (Martin Scorsese even hailed it among the scariest films of all time,  which is quite the coup for Furie, whose other credits include Superman IV: Quest for Peace). Boasting an Oscar-worthy lead performance from Hershey and a highly memorable percussion-heavy soundtrack by Charles Bernstein (Quentin Tarantino even lifted it for a scene in Inglorious Basterds), The Entity is likely the most disturbing movie about a ghostly haunting ever made—certainly the most disturbing to be released by a major studio. It’s likely for this reason 20th Century Fox decided not to release its planned tie-in video game for the Atari 2600 in which players were to use a pair of paddles to push its ghostly rapist skyward to a higher plane of existence. In part to its grim subject matter, the movie also does that great thing The X-Files often did where it suggests a logical, non-paranormal solution for its events if you so choose to accept them (SVU fans can probably guess what that is). As is often the case with these things, the out makes the idea this poor woman actually is being terrorized by a higher-dimensional monster even more frightening. Go figure. It’s worth noting, however, that even though this new project is based on the same source material, Deadline’s article fails to mention the existence of the 1982 film at all, so we can safely assume this project isn’t officially based on Furie’s novel. As producer Missy Valdez states in the article, “This film is based on a true story and that truth is chilling. It is an honor and a challenge to bring Doris’s raw and terrifying experiences to the screen with care and dignity … this is an elevated horror film that blends emotional depth with real-life terror, and we believe it will deeply resonate with both genre fans and new audiences alike.” Still, the story “so shocking, so threatening, it will frighten you beyond all imagination” (per one of The Entity‘s original taglines) is certainly ripe for a new examination. Godspeed, Heather Graham. Want more io9 news? Check out when to expect the latest Marvel, Star Wars, and Star Trek releases, what’s next for the DC Universe on film and TV, and everything you need to know about the future of Doctor Who.