What Was It? by Fitz-James O'Brien
Quick answer: What Was It? by Fitz-James O'Brien: full summary with the ending, the invisible creature captured in a New York boarding house, themes, craft and legacy.
A man lies reading in bed in a supposedly haunted New York boarding house when something drops onto his chest out of the empty air and closes two hands around his throat. He fights it, masters it, pins it to the floor, and only then comes the moment the title asks about: in full lamplight, holding a living, struggling, breathing body, he can see nothing at all. Fitz-James O'Brien published What Was It? in Harper's New Monthly Magazine in 1859, and with it invented the invisible monster.
O'Brien, an Irish bohemian who would die young in the American Civil War, wrote the story decades before Maupassant's Horla or Bierce's Damned Thing, and both owe him a debt. What still startles is the tale's method: faced with the impossible, its characters behave like curious, frightened, methodical adults, and the story becomes an experiment in how much the rational mind can hold.
The story in brief, ending included
The narrator, Harry, and his fellow lodgers have taken rooms in a house on Twenty-Sixth Street with a reputation: the previous tenants left claiming disturbances, and the new bohemian household half hopes for a ghost. Harry and his friend Dr Hammond, both opium takers, spend an evening in philosophical talk about the greatest possible terror, agreeing that the supreme horror would be something beyond conception, and retire. That night the thing lands on Harry's chest. The struggle is desperate but brief: the attacker is small, and Harry, athletic and terrified, overpowers it, binds it with a cord, and shouts the house awake. What the lamplight shows is a knotted cord suspended around nothing, dents in the bedclothes under no visible weight, and Harry holding down empty air that pants and strains.
Most of the household flees or scoffs; Hammond stays, grasps the invisible limbs, and the two men tie the creature to the bed. The story then does its most original thing: it investigates. The creature is solid, warm, breathing, roughly the size of a boy, and hideous to the touch. Chloroformed, it is given to a plaster cast, and the mould reveals its shape: a small humanoid of ghastly, distorted aspect, something like the grotesques of Gustave Dore, muscled for violence. Science has nothing further to offer. The question of feeding it cannot be solved because no one can discover what it eats; it refuses everything. Over about two weeks the invisible captive starves, its struggles weakening daily while the lodgers watch in helpless disgust and pity, and it dies. They bury it in the garden, and the narrator offers the cast to a museum, leaving the question of the title exactly where he found it: unanswered.
The household on Twenty-Sixth Street
O'Brien sketches a whole bohemian ecosystem in a few pages, then narrows to two investigators.
Themes: the limits of the visible, and of sympathy
Exam answers should start with epistemology: the story is an assault on the equation of seeing with knowing, and its horror survives every empirical test the characters apply, because each test confirms the thing is real without explaining it. The opium-fed conversation about ultimate terror sets a second theme, the mind summoning what it contemplates, and the boarding house itself carries a social theme: a community of strangers, assembled by rent, confronting the unknown by committee.
The sharper observation is the ending's moral rotation. The monster of the first half becomes the starving prisoner of the second, and the men who mastered it can neither help it nor release it. O'Brien quietly converts horror into guilt: the creature dies not of violence but of the household's total ignorance of its nature, and the title's question turns plaintive. What was it becomes what did we kill.
The craft: proving the impossible step by step
The story's greatness is procedural. O'Brien understood that one wild claim, verified in stages, beats ten unverified marvels: the cord that hangs in space, the dented pillow, the second witness's grip, the chloroform, the plaster cast. Each stage lets the reader's scepticism fail in an orderly way, which is why the tale reads as testimony rather than fancy. The plaster cast is the masterstroke, a solution that gives the monster a shape while keeping it invisible, satisfying curiosity and preserving dread in one move.
For writers, the lesson is to give your impossible element exactly one impossible property and make everything else rigorously ordinary. The creature breaks one law, visibility, and obeys every other: it has weight, warmth, hunger, mortality. Fantastic fiction convinces in proportion to what it refuses to exempt, a discipline that pays in any judged field; Writory's contest rubric puts marks on creativity, but readers only surrender to invention that keeps the rest of the world honest.
What poets can take from this
- For exams, list the verification stages, cord, bedclothes, second witness, cast, as O'Brien's method of building belief.
- Note the date, 1859: this precedes Maupassant's Horla and Bierce's Damned Thing, a strong context point.
- Use the starvation ending to discuss the story's shift from horror to guilt and pity.
- When imitating O'Brien, give your marvel one impossible property and total obedience to every other natural law.
- Recruit a hard-headed second witness early; shared testimony is worth pages of description.
- Find your equivalent of the plaster cast: a way to reveal shape while preserving mystery.
Try it yourself
Write a story in which two level-headed housemates capture something with exactly one impossible property. Verify it in at least four escalating, practical stages, and then confront them with a problem mastery cannot solve: the thing has needs they cannot discover. End on the question the title asks.
Questions
What is the creature in What Was It?
It is never explained. The plaster cast shows a small, distorted humanoid form, solid and mortal but completely invisible. O'Brien deliberately withholds any origin, and the story's title keeps the question open after the creature starves and is buried in the garden.
How does What Was It? end?
Unable to discover what the invisible creature eats, the household watches it weaken and die of starvation over about two weeks. They bury it in the garden, a cast of its form is preserved, and no explanation is ever found.
Why is What Was It? historically important?
Published in 1859, it is generally counted the first significant invisible-monster story, ahead of Maupassant's The Horla and Bierce's The Damned Thing, and its investigative, evidence-driven method became the template for scientific horror.
By the Writory editorial team, reviewed by working poets. Updated July 2026.
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