DNA Banner 03
horror dna logo header right
Slither Main

nick kolakowski poster large


Written by Nick Kolakowski

When I sat down to write Absolute Unit, my novella of body horror told from the perspective of a sentient (and sarcastic) parasite living in the gut of a corrupt public health inspector, I ended up watching and reading a lot of parasite- and virus-themed horror. Emphasis on “a lot,” because innumerable writers and directors have taken their own spin with the theme over the past several decades.

It’s easy to see why parasite horror has enjoyed such a robust life. What’s creepier than the idea that you’ve been invaded by something alien? It destroys the illusion of the body’s sanctity that allows us to go about our day. For much of the 20th century, you also didn’t have to squint very hard to see the political allegory for communism in these tales, an undercurrent of hysterical fear that seems almost quaint in context.

The following are five works (two short stories, three films) that I particularly enjoyed as part of my research. Their presence isn’t meant to diminish the impact and worth of parasite-heavy books and films such as Carpenter’s The Thing; but if you’re feeling particularly completionist, I would check these out.

who goes there poster small Who Goes There? by John W. Campbell Jr. (Short Story)

First published in 1938 in Astounding Science Fiction, the novella Who Goes There? takes place in a remote Antarctic base staffed by a bunch of researchers. This group of hardy fellows stumbles upon the wreck of an alien spaceship in the ice, along with an alien corpse that turns pretty frisky once it thaws out.

From that point forward, alien and researchers are locked into respective races against time. The alien (deemed ‘The Thing’) is parasitic in nature, and capable of imitating any living organism; it tries to use its powers of imitation to hide out until it can escape to the outside world. Meanwhile, the researchers work to isolate the base and destroy the alien.

Eighty-three years after it came out, the story is still a masterwork of suspense, which is perhaps no surprise considering its author, John W. Campbell Jr., was an intensely prolific sci-fi author and editor (Isaac Asimov called him “the most powerful force in science fiction ever.”). During the climax, Campbell even anthropomorphizes a flamethrower, and how often do you see a deadly weapon given a personality?

Who Goes There? directly inspired two firms: The Thing from Another World (1951) and The Thing (1982); a prequel to the latter, also called The Thing, came and went in 2011.

clarkesworld poster small The Things by Peter Watts (Short Story)

For your maximum rampaging-parasite pleasure, pair a reading of Who Goes There? with The Things, a short story by Peter Watts that won the Shirley Jackson Award after its 2010 publication in Clarkesworld. It’s the same tale of Antarctic suspense, only from the alien’s perspective as it attempts to infect all the scientists before they can burn it out.

“The names don't matter,” the alien recounts at the beginning, as it rattles through all the humans it has assimilated. “They are placeholders, nothing more; all biomass is interchangeable. What matters is that these are all that is left of me. The world has burned everything else.”

Watts is brilliant in depicting an utterly strange point of view, and the implications of the ending are terrifying. There’s no sympathy for the devil here; just the promise of a lot more horror and pain.

splinter poster small Splinter, directed by Toby Wilkins (Film)

A young couple ends up hijacked by an escaped convict and his girlfriend; the group arrives at a rural gas station already under attack by a parasitic creature that turns everyone it infects into a spiny, gooey monster straight from hell. Besieged, the humans barricade themselves in the gas station’s walk-in freezer, where they figure out the creature’s weakness—but is that knowledge enough to help them escape?

Splinter wasn’t a huge hit when it came out, although it racked up a bunch of award nominations. If you’re interested in a parasite-themed film that’s soaked with just the right kind of ick, it might just have what you need.

slither poster small Slither, written/directed by James Gunn (Film)

Long before Guardians of the Galaxy and The Suicide Squad, James Gunn made his directorial debut with Slither (2006) a tasty slab of horror-comedy featuring alien parasites invading a small town. It’s funny as hell, and increasingly gross once the parasites begin turning the people of quaint Wheesley, South Carolina into zombies. It’s also reminiscent of Robert Heinlein’s iconic The Puppet Masters, about interstellar slugs who telepathically control their hosts…that is, if Heinlein had inhaled a big dose of nitrous oxide before sitting down to write.

shiver poster small Shivers (a.k.a. They Came From Within), directed by David Cronenberg (Film)

David Cronenberg is arguably the king of cinematic body horror, and Shivers (1975) might be his masterpiece on that front. An engineered parasite turns everyone it infects into a mindless sexual deviant, and it’s loose in an apartment complex in Montreal. The climax in the complex’s pool is pulpy and debauched, and the whole film teeters on the edge of crass exploitation—held back largely by Cronenberg’s technical skill.

Horror DNA would like to thank Nick for sharing this fantastic list with us. Make sure to pick up a copy of his latest, Absolute Unit, by clicking one of the links below!

Buy Amazon Us
Buy Amazon Uk

This page includes affiliate links where Horror DNA may receive a small commission at no extra cost to you.


Join Us!

Hit the buttons below to follow us, you won't regret it...