At first glance, Primate sounds like the kind of midnight-movie dare you accept knowing exactly what you’re getting into. A chimpanzee. Rabies. A remote luxury house. Blood everywhere. And yet, beneath the grindhouse setup and knowingly trashy hook, the film turns out to be smarter, nastier, and more entertaining than it has any right to be.
Directed by Johannes Roberts, the man behind 47 Meters Down, Primate leans hard into B-movie territory while still grounding its horror in something uncomfortably real. It’s ridiculous, yes — but it’s also brutally effective.
The Setup: Cute Chimp, Bad Idea
The film opens with a solemn history lesson about hydrophobia — a choice that’s as ominous as it is faintly absurd — before revealing the real culprit: rabies. The science may wobble a bit, but the tone is clear early on. This is not prestige horror. This is carnage with a wink.
The story centers on Lucy, a college student returning to her family’s stunning cliffside home in Hawaii to reunite with her younger sister Erin and their father Adam, a successful crime novelist who is deaf. Adam is played by Troy Kotsur, whose warmth and presence briefly make you think Primate might be interested in emotional depth.
The family dynamic feels lived-in and gentle, especially in the shadow of their mother’s recent death. There’s also Ben — the family’s pet chimpanzee — brought home years earlier as part of a linguistics experiment. For a while, Ben is disarmingly adorable, wearing a red shirt, clutching a teddy bear, and typing out simple sentences on a digital keypad.
It’s unsettling in hindsight. Because once Ben is bitten by a rabid animal, the film wastes little time turning him into a nightmare.
When the Slasher Switch Flips
The transformation is swift, maybe too swift — one of the film’s few missed opportunities is not lingering longer on Ben’s slow unraveling. But once the violence begins, Primate commits fully.
Lucy, Erin, and a small group of unlucky visitors find themselves trapped in the house’s pool area. The water keeps them safe — for now — but escape isn’t an option. Ben is faster, stronger, and terrifyingly precise. When the first major bite lands, the movie hits the gas and never looks back.
What follows is pure slasher mechanics, filtered through the uniquely disturbing lens of an animal that feels just human enough to make every kill uncomfortable.
What Worked
One of Primate’s biggest strengths is how “real” Ben feels. The chimp is brought to life through practical effects and a physical performance by Miguel Torres Umba, and it shows. The snarling grin, the sudden bursts of movement, the unsettling intelligence behind the eyes — Ben is as frightening as any masked killer.
Roberts wisely avoids making the chimp supernatural or cartoonish. Ben isn’t evil. He’s sick. In that sense, Primate aligns itself with creature classics like Jaws or Cujo, where terror comes from nature going wrong rather than malice.
The kills are vicious, inventive, and often darkly funny. The film’s standout moment — a jaw-ripping attack delivered with horrifying speed — is destined to become its most talked-about scene. It’s shocking, grotesque, and exactly what fans of the genre are here for.
What Didn’t Quite Land
Not everything works smoothly. Some characters are thinly sketched, clearly designed to become human fodder rather than people we’ll miss. Once the violence escalates, emotional stakes take a backseat to body count.
The pacing around Ben’s descent into madness could have benefited from more buildup, allowing the horror to creep in before exploding. And the opening attempt at scientific gravitas feels unnecessary, given how gleefully the film later embraces exploitation.
A Knowing Nod to Horror History
There’s an undeniable echo of the infamous chimp storyline from Nope, though Primate refuses subtlety where Peele relied on implication. This movie doesn’t suggest violence — it shows it, repeatedly, and with enthusiasm.
Part of the grim fun lies in seeing humans reduced to helpless prey. Swimsuits replace personalities. The house becomes a maze. Shadows become punchlines. It’s cruel, cheeky, and fully aware of what it’s doing.
Final Verdict
Primate is unapologetic slasher trash — but it’s well-crafted trash, delivered with confidence and clever restraint. By keeping its killer grounded in physical reality and leaning into practical effects, the film finds a fresh angle in an overstuffed genre.
It won’t convert horror skeptics, and it doesn’t aim to. But for viewers willing to embrace the madness, Primate delivers exactly what it promises: fast, ferocious mayhem with a disturbingly memorable monster at its center.
Sometimes, that’s more than enough.
