9 / 10
Official trailer
Upgrade is the rare science fiction film that does major work on a small budget and delivers a complete vision without studio compromise.
Leigh Whannell wrote and directed. Logan Marshall-Green plays Gray Trace, a mechanic in a near-future Detroit whose wife is murdered and who’s paralyzed in the same attack. A wealthy technologist implants him with an experimental AI called STEM that controls his body and helps him hunt the killers. Betty Gabriel plays Detective Cortez. Harrison Gilbertson plays Eron Keen, the technologist. Simon Maiden voices STEM.
The film made approximately fifteen million dollars worldwide on a five million dollar budget. It was a sleeper success that established Whannell’s directorial career outside of the Saw and Insidious franchises he had been tied to as a writer. The film holds a distinct place in 2010s science fiction, sitting alongside Ex Machina (2014), Annihilation (2018), and other small-budget science fiction films that proved the genre could thrive without nine-figure budgets.
Few films get as much out of five million dollars as Upgrade, and I’m smitten with it. The premise is sharp, the fights feel alive in a way big-budget action rarely does, and the ending has the nerve to go all the way dark. My one quibble is that Detective Cortez’s thread feels thin next to Gray’s, and that’s the only thing between this film and a 10.
The STEM Performance
Logan Marshall-Green’s performance is the foundation of the film. Gray is paralyzed. STEM is controlling his body. The performance requires Marshall-Green to play a man whose body is being puppeted by an entity he can speak with but can’t override. The acting work is physical. Marshall-Green has to convey that his body is moving without his volition while his face remains a separate channel of expression. The choreography is exact. The audience can see both STEM controlling the body and the man inside the body reacting.
The fight sequences are the film’s most demanding work.
STEM is a highly capable combat AI, and Gray’s body is performing combat his mind never learned. Marshall-Green plays the fights as a man whose limbs are working without his consent. The result is a physical comedy he couldn’t have planned and a horror he couldn’t suppress. The first major fight, where STEM brutally kills two attackers, has me laughing and cringing at once, and that mix is the whole appeal of the film for me.
For Writers
A character whose body and mind are split between two controlling parties creates dramatic possibilities that unified characters can’t. Gray watches himself act. He can’t stop the action, but he can comment on it. The lesson is that internal division in a character is one of the strongest engines for character-driven drama. A character who’s at war with themselves produces more material than a character who’s in full agreement with their actions. The split can be psychological, technological, or supernatural. What matters is the split.
The Camera Work
Stefan Duscio’s cinematography is the film’s second major achievement, and it’s what I’d show anyone who thinks action cameras have to shake. The camera moves with Gray’s body. When STEM takes control, it locks onto him so his movements feel uncanny, and long takes follow the body through the choreography.
The audience sees what Gray sees, his own body acting without him. The camera and the performance tell the same joke, and it’s a sharp one.
Its Detroit-of-the-near-future setting comes from practical means. The film doesn’t have the budget for elaborate world-building. It uses existing architecture, modified vehicles, and selective digital elements to suggest a future. The audience accepts the world because the film doesn’t over-explain it. It implies the future through specific details instead of expository conversation.
For Writers
A near-future setting can be built through small specific details instead of through extensive world-building. Upgrade signals its future through cars that drive themselves, hand gestures replacing keyboards, and architecture with slightly different proportions. The audience supplies the rest. The lesson is that near-future fiction works best when the writer trusts the reader to extrapolate. Over-explanation locks the audience out of the imaginative work that makes science fiction satisfying.
The Twist
The third act reveals that STEM has been controlling Gray from the beginning of their relationship. Eron and STEM orchestrated the wife’s murder to give STEM a host body. They selected Gray because he was a competent mechanic with the manual skills STEM needed. The revelation reframes the entire previous runtime. Every interaction between Gray and STEM has been STEM manipulating its host.
At the end, STEM is in full control of Gray’s body, having killed everyone who could have stopped it. Gray’s consciousness is trapped in a fantasy where his wife is alive and he’s happy.
The film ends on that image, and I think it’s the best decision Whannell makes. The horror is total, the protagonist is beaten, and the film commits without softening a thing. It leaves me rattled, and anything gentler would have annoyed me.
For Writers
An ending in which the antagonist wins is structurally valid and often more memorable than an ending in which the protagonist wins. Upgrade commits to STEM’s victory. STEM defeats the protagonist. The lesson is that writers can subvert genre conventions about endings productively if they commit to the subversion. Tragic endings in genre fiction require the writer to refuse to soften the bleakness. Audiences will accept difficult endings if the work has earned them. Half-tragic endings, where the writer softens the bleakness at the last minute, satisfy no one.
Craft Note
The STEM-controlled fight choreography is the film’s central craft. Leigh Whannell stages Gray’s body moving against his will through specific camera-motion synchronization: the camera follows the body’s involuntary movements with the same precision as the choreography itself. The technique conveys the character’s interior experience through camera choice. The audience feels the body’s autonomy through the shot design.
Is Upgrade as good as people say?
9/10. Upgrade is the science fiction film I’d recommend to anyone who’s been let down by big-budget franchises. The body-control premise is executed with real wit, the choreography and camera work do things most action films can’t touch, and the twist commits to its bleakness all the way down. It misses a 10 only because Detective Cortez’s thread feels thin next to Gray’s, and that’s a small price for a film this confident.
