It stars Andrea Riseborough and Christopher Abbott, with Rossif Sutherland, Tuppence Middleton, Sean Bean, and Jennifer Jason Leigh in supporting roles.

Vos struggles with neurological symptoms and increasing detachment from her own identity and cannot fully separate her work from her interactions with her husband, Michael, and son, Ira.

In a debriefing session meant to reconnect her with her real identity, Vos sorts through a series of objects associated with personal memories and pauses on a butterfly that she pinned and framed as a child.

Vos attempts to finish the job per protocol by forcing Tate to shoot himself, but again cannot make him pull the trigger.

Tate regains control, but is severely disoriented, in shock and traumatised from the violence before him, so he flees the crime scene.

In May 2018, it was announced Andrea Riseborough and Christopher Abbott had joined the cast of the film, with Brandon Cronenberg directing from a screenplay he wrote.

[6] In February 2019, Jennifer Jason Leigh, Stacy Martin and Sean Bean joined the cast of the film.

The website's consensus reads, "Further refining his provocative vision, writer-director Brandon Cronenberg uses Possessor's potentially over-the-top premise as a delivery mechanism for stylishly disturbing thrills.

"[18] On Metacritic, the film has a weighted average score of 72 out of 100, based on 23 critics, indicating "generally favorable reviews".

[19] The film received a positive review by David Sims in The Atlantic, who wrote: "Cronenberg isn't just looking to provoke with blood and guts—like all good dystopian fiction, Possessor offers disturbing and timely observations about the world we already live in.

David Ehrlich from IndieWire called it "a coldly compelling prologue"; and Wendy Ide from Screen Daily agreed: "In a memorable cameo role in the film’s opening, Gabrielle Graham also makes an impact.

"[24] John DeFore of The Hollywood Reporter praised the film's direction, visuals, as well as its performances, and special effects.

[5] Rob Hunter of Film School Rejects gave the film a positive review, writing: "While Possessor retains his family's love of body horror and morally misused electronics it also manages an engrossing pace, engaging characters, unrelentingly brutal violence, erect penises, a must-own Halloween mask, a mean-spirited Sean Bean, one hell of an ending, and more.... All of it, though, is fantastically and cruelly unforgettable.

[29] The film received three nominations at the inaugural Critics' Choice Super Awards in the Science Fiction/Fantasy category, for Best Movie, Best Actor, and Best Actress.