There are bad movies, and then there are good bad movies. And then, every once in a while, you stumble onto something like Impulse (1984), a paranoid little gem that sits somewhere between Cold War eco-thriller, body-horror nightmare, and accidental public service announcement about why you should never drink milk. Ever.
Directed by Graham Baker, Impulse takes the absurd premise of toxic waste leaking into a small town’s dairy supply and uses it to unleash chaos, sex, violence, and family dysfunction worthy of a Tennessee Williams play that’s been dipped in plutonium. It should be ridiculous—and it is—but it’s also disturbingly effective.
And at the center of it all, like a beacon of sanity in a world of incestuous brothers and flaming garages, is Meg Tilly.
Meg Tilly: America’s Last Hope
Meg Tilly plays Jennifer Russell, a woman who returns to her hometown with her boyfriend Stuart (Tim Matheson, forever typecast as the smug guy from Animal House), only to discover the place has gone completely feral. The town’s residents start acting out their darkest impulses—murder, sex, violence, petty vandalism. Think The Stepford Wives if the malfunction wasn’t in the wiring, but in the dairy aisle.
Tilly’s performance is the glue holding this radioactive Jenga tower together. She has that perfect mix of vulnerability and intelligence—enough to make you believe that while everyone else is running around smashing each other’s heads in with farm tools, she’s the only one who can connect the dots. Also, she doesn’t drink the milk, which automatically makes her the smartest character in a horror movie since Ripley double-checked the cat carrier before boarding the escape shuttle in Alien.
Let’s be honest: if Meg Tilly weren’t here, Impulse would have been just another VHS curio collecting dust between The Toxic Avenger and Spasms. Instead, she gives it credibility it doesn’t deserve, elevating a movie about killer moo-juice into a haunting little fable about corruption—both chemical and moral.
Tim Matheson: Boyfriend, Milk Drinker, Idiot
Tim Matheson’s Stuart is the unlucky counterbalance to Tilly’s grounded heroine. He’s handsome, cocky, and about as resistant to corruption as a paper towel in a hurricane. While Jennifer abstains from the local dairy supply, Stuart chugs it down like a frat boy at a kegger, which means within twenty minutes he’s punching walls, sweating heavily, and looking like he’s two steps away from trying to mate with the family tractor.
His transformation is both hilarious and tragic. Hilarious because Tim Matheson has this smugness that makes watching him unravel strangely satisfying. Tragic because Jennifer has to watch her boyfriend spiral into violent insanity while she’s desperately trying to keep her jeans un-singed in a garage fire set by possessed children.
In most movies, the male lead saves the day. In Impulse, he’s a liability, a milk-addled cautionary tale, and eventually a corpse. Progress!
The Supporting Cast: Bill Paxton and Hume Cronyn in “What the Hell?” Roles
Yes, that’s Bill Paxton as Jennifer’s brother Eddie. And yes, Eddie has the hots for his sister. If you ever wanted to see young Bill Paxton ooze sleaze and menace in a way that makes Weird Science look like Anne of Green Gables, this is your movie. It’s gross, it’s uncomfortable, and it’s also kind of mesmerizing—like watching a car crash in slow motion, narrated by Jerry Springer.
And then there’s Hume Cronyn as Dr. Carr, the kindly old physician who decides to euthanize Jennifer’s mother and then kill himself. Cronyn was a stage legend, a Hollywood veteran, a respected actor who shared the screen with Katharine Hepburn and Spencer Tracy—and here he is in a movie about toxic waste turning people into incestuous arsonists. It’s the kind of casting that makes you wonder if his agent lost a bet.
Still, his presence adds a strange gravity to the proceedings. When Cronyn checks out, you realize, “Oh, this movie isn’t playing around. If they’re killing off Hume Cronyn, all bets are off.”
Killer Children, Flaming Garages, and the Dairy Conspiracy
The middle act of Impulse is where it truly shines—or festers, depending on your tolerance. Jennifer visits her friend Margo, only to find evidence she broke her son’s arm. Later, the kids slash Jennifer’s tires and try to burn her alive in a garage. It’s basically Children of the Corn meets Leave It to Beaver, and it works because it taps into a primal fear: kids aren’t supposed to be homicidal little pyromaniacs. But when they are, it’s terrifying.
The culprit, of course, is the milk. Toxic waste has leaked into the supply, tainting the whole town, which leads to the single most important moral of this movie:
Got milk? Then you’ve got problems.
Government Conspiracies: Because Why Not?
Just when you think Impulse is going to stick with its eco-horror lane, it swerves into government cover-up territory. Stuart discovers the milk facility leak, only to get gunned down by a government stooge loading barrels into a biplane. Jennifer, now the Last Girl Standing, mows the guy down with her truck and walks away from a town full of corpses.
It’s a perfect ‘80s ending: bleak, cynical, and weirdly satisfying. The government’s involved, the boyfriend’s dead, the whole town has collapsed, and Meg Tilly survives. Roll credits.
Why It Works (Against All Odds)
Impulse shouldn’t work. Its plot sounds like a parody from Saturday Night Live: “This week’s horror movie? Killer milk!” Its pacing is uneven, its characters oscillate between soap opera and Lifetime Original, and yet… it lingers. Why?
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Meg Tilly’s performance – She grounds the madness. Her wide-eyed alarm and resilience make you believe this absurd scenario.
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The slow creep of corruption – The way the town devolves is handled with eerie patience. First little cracks, then big ones, until everything collapses in flames.
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The mix of horror and perverse humor – Incest, arsonist children, milk as a weapon—it’s grotesque, but also darkly funny.
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The ending – No cheap redemption. Just Meg Tilly walking away from carnage, bathed in the glow of a setting sun like some traumatized Joan of Arc of dairy-free living.
Final Thoughts: Don’t Drink the Milk
Impulse is an oddity, but an oddly effective one. It’s a B-movie with A-movie ambition, anchored by Meg Tilly’s sincerity, spiced with Bill Paxton’s sleaze, and tied up in a bow of radioactive absurdity. Sure, it’s ridiculous. Sure, it looks like it was shot on the budget of a school fundraiser. But it’s also genuinely unsettling—a film about the thin line between civility and chaos, and how easily that line dissolves when you tamper with nature (or dairy).
It’s not a masterpiece. But it’s memorable, and sometimes, in the wasteland of forgotten VHS horror, that’s enough.
Grade: B (for “Bovine Apocalypse”)
Meg Tilly saves the day. Milk kills everyone else. The end.
