Henry Joost and Ariel Schulman made Catfish. Then they made Paranormal Activity 3, which is one of the better entries in that franchise. Then they made Paranormal Activity 4, which is not. And then, in 2016, they made Viral — a pandemic teen horror film that arrived quietly on VOD, earned a shrug from critics, and disappeared almost immediately. Which is a mild shame, because it’s more competent than its reputation suggests. Just not quite competent enough.
Viral (2016)
The Story: Emma and Stacey Drakeford have just moved to a quiet suburban town in California. Their father teaches at the local school. Their mother is out of town. And then a parasitic outbreak begins spreading through the community — fast, strange, and apparently unstoppable. Quarantine is declared. The roads are blocked. And inside the house, Stacey is getting sick.
🎬 Our opinion: A lean, watchable outbreak horror that does more with its Blumhouse budget than you’d expect — but loses its nerve in the third act and never quite finds the dread it’s reaching for. Sofia Black-D’Elia is the best thing in it. The parasite design is genuinely unsettling. The teen drama surrounding both of those things is less so.
Director: Henry Joost, Ariel Schulman · Cast: Sofia Black-D’Elia, Lio Tipton, Travis Tope, Michael Kelly, Colson Baker
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Powered by JustWatchWhat Viral Is About
Emma Drakeford is seventeen, new to town, and trying to make the best of a move her family didn’t ask for. Her father has taken a job teaching science at the local high school. Her older sister Stacey is more socially adaptable — she’s already made friends, already has a boyfriend. Their mother is somewhere else, and the distance between their parents is the kind of thing nobody talks about directly.
Then the news starts reporting on something spreading through the region. A parasite. Cases multiplying. The town goes into quarantine. Roads are blocked. The internet goes down. The sisters’ father doesn’t come home.
And then Stacey starts showing symptoms.
What follows is a contained horror film — two sisters, one house, one rapidly deteriorating situation — that uses its tight geography effectively in its better moments and relies rather too heavily on teen drama in its lesser ones.
The Viral Trailer
Review: Viral (Spoiler-Free)
The parasite in Viral is a good one. A worm-like organism that enters through the mouth, takes hold of the host, and begins to change them in ways that are specific and unpleasant — Joost and Schulman clearly did their homework on body horror, and there are moments in the film’s second act that are genuinely disturbing. When Viral focuses on what the infection actually does to a person, it’s effective. When it focuses on high school politics and a will-they-won’t-they subplot, less so.
Sofia Black-D’Elia anchors the film as Emma, and she’s considerably better than the material requires. She plays fear convincingly — not the wide-eyed horror-movie variety, but the specific, exhausted fear of someone who has been in a bad situation for too long and is running out of options. Her scenes with Lio Tipton, as the slowly deteriorating Stacey, have a genuine intimacy that the script earns rather than simply assumes.
The found footage framing — Emma documents events on her phone — is used intermittently rather than consistently, which weakens it. The film would have been stronger committing to the format or abandoning it entirely. As it stands, the handheld footage appears when it’s useful and disappears when it isn’t, which breaks the internal logic the genre depends on. You’re never quite convinced that anyone actually needs to be filming this.
The quarantine setting is the film’s best asset. There’s something quietly suffocating about the locked-down suburb — empty streets, rumours spreading faster than information, the creeping sense that the authorities outside the perimeter are not coming to help. Joost and Schulman use the location economically, and the cinematography keeps things appropriately claustrophobic. The film earns its tension in the right places.
Where it loses it is the ending, which arrives abruptly and resolves rather too neatly for a film that had been building toward something messier. The third act feels like a different version of the film reasserting itself — one more concerned with genre mechanics than with the sisters’ story that the first two acts had made you care about. It’s not a disaster, but it’s a deflation.
Did you know?
A Blumhouse pandemic film that arrived four years too early. Viral was written by Christopher Landon — who also wrote Paranormal Activity 2, 3 and 4 — and Barbara Marshall, and produced by Jason Blum. It was shot in 2014 but sat in distribution limbo for nearly two years before eventually landing on VOD in July 2016. Directors Henry Joost and Ariel Schulman first came to attention with Catfish (2010), their documentary about online deception that helped launch a genre of its own, and brought their found footage sensibility to the Paranormal Activity franchise before making Viral. The film also features an early appearance from Colson Baker — better known as Machine Gun Kelly — in a supporting role as Stacey’s boyfriend CJ.
Verdict
Viral is a mid-tier Blumhouse horror that does enough right to be worth your 85 minutes — strong central performance, effective creature design, good use of its contained setting — without ever quite becoming the film its better moments suggest it could be. The found footage elements are half-committed, the teen drama drags, and the ending disappoints. But the sisters at its core are worth following.
Watchable, occasionally unsettling, and largely forgotten for reasons that aren’t entirely fair.
Where to Watch Viral
Powered by JustWatchSimilar Movies to Viral
If the quarantine-horror angle worked for you, these films share the same basic premise — a contained outbreak, people trapped together, something spreading — and mostly execute it with more conviction.
[REC] (2007) — The gold standard of outbreak found footage. A TV crew locked in an apartment building as something spreads through the residents. Relentless, brilliantly paced, and still the film that everyone else in this subgenre is chasing.
Quarantine (2008) — The American remake of [REC], nearly shot-for-shot, and surprisingly effective in its own right. Less elegant than the original but hits the same notes with confidence. Worth watching if you want the same experience with English dialogue.
The Sadness (2021) — Taiwanese outbreak horror with no interest whatsoever in restraint. Where Viral suggests body horror and keeps most of it offscreen, The Sadness goes as far as it’s possible to go in the opposite direction. Not for the faint-hearted, but ferociously committed to its premise.
Contracted (2013) — A young woman contracts something after a one-night stand and begins to deteriorate in ways she can’t explain. Like Viral, it’s body horror through a character study — the infection as a metaphor for something else entirely. Nastier and more focused than Viral, and the better film for it.
