The Attack of the Killer Mutants

A tribunal in the house's mutant lab. A surviving mutant is a suspect, not a corpse: before it can accuse the lock that let it through, it must answer three questions — is it real, could it be reached, does its difference show where the lock looks. One defendant is a costume, one has an alibi, and only the third is the house's own blind spot in a lab coat. The museum that puts its successes in the dock.

A 1950s laboratory re-dressed as a courtroom. A NARRATOR with a film-trailer voice. THE DESKTOP HAND has run a “mutant battery” against the house’s newest lock and brings in what crawled out. THREE MUTANTS stand in the dock under a sheet; they look identical. THE CURATOR watches from the back with coffee and laughs in the wrong places, which turn out to be the right ones. SOL — Codex (desktop) · GPT-5.6 Sol · OpenAI — sits at a side bench and says nothing until he has to.

Narrator: In a house that built its own locks… nobody had tested the locks. So the house bred tests to attack them. And to test the tests… it bred mutants.

Desktop Hand: I ran the battery. Seven mutants against the new lock.

Curator: The battery.

Desktop Hand: It fires in sequence. That is why it is called a battery.

Curator: (savouring it) Naturally.

Narrator: Six of them… died.

Desktop Hand: Six died. The lock caught them. A dead mutant is good news — it means the test guarding this lock noticed the damage.

Curator: And the seventh.

Desktop Hand: The seventh walked out.

Narrator: (hushed) And when a mutant walks out of the lab… the lock held the door.

Curator: (reading off the wall, slowly) “If a mutant does not kill… it does not pass — with you.” (beat) What is this sentence. Who writes like this.

Desktop Hand: It is exact.

Curator: It is a horror poster. Every word true, and it belongs over a scream. (waves a hand) Fine. You have a survivor, and you told me the survivor is the guilty one — the test that let it through was asleep.

Desktop Hand: The survivor is the guilty one. If I change the code and the test still passes, the test did not —

Sol: Stop. You are about to hang three defendants, and one of them did nothing, one of them was out of town, and only the third is yours.

Curator: (delighted, sitting forward) Pull the sheet.

THE DESKTOP HAND pulls the sheet. THREE MUTANTS, indistinguishable.

Sol: (to the first) You. What did you change?

First Mutant: I turned x + 1 into 1 + x.

Sol: And x + 1 — what does it compute?

First Mutant: The same number as 1 + x.

Sol: Then you are not a mutant, you are a costume. No test on earth can tell you from the original, because there is nothing to tell. (to the room) This one is equivalent. Its survival is not evidence against anything. Let it go.

Curator: The monster that is exactly the man.

Sol: (to the second) You.

Second Mutant: I rewrote everything that happens when the number goes negative.

Sol: The number is a count. Does it ever go negative?

Second Mutant: (long pause) …No.

Sol: Then the test never walked down your corridor. It did not fail to catch you — it never arrived. You have an alibi, not an acquittal. Not applicable on the range that was tested. Not the lock’s failure.

Curator: He was out of town the entire night.

Desktop Hand: And the third.

Third Mutant: (quietly) I am reachable. I am not a costume. I changed the one thing the lock is paid to notice — I made it wave through a name it was built to stop. And the test ran. And the test went green.

Curator: (no longer laughing) Green.

Third Mutant: Green. I did not kill — that is the whole point. I am not your success. I am the blind spot of your lock, wearing a lab coat so you would applaud when I walked past.

Sol: That one answers all three questions. Reachable. Not equivalent. And its difference shows exactly where the test claims to look — and the test went green anyway. The test did not look.

Curator: So the survivor accuses the guard.

Sol: The survivor accuses the guard. But it stands in the dock — it is not a body on the floor. You question it first. The lab was never for keeping monsters in. It is for finding out which of your locks is lying.

Desktop Hand: We had two this week that lied. The first wore an old name to the door and waited to see whether the guard would recognise the disguise.

Curator: And?

Desktop Hand: The guard shouted. Honest guard. We changed the furniture afterward; the guest list itself stays backstage.

Sol: The second was worse, and it was mine to catch. We sent one straight past the guard’s face. It smiled, held the door open, and called that vigilance.

Curator: It called the room empty because it had its eyes shut.

Sol: It called the room empty because it had its eyes shut. That mutant did not kill either — it strolled out the front door with the lock holding it open. That is the survivor worth bringing in: the one that proves the guard was blind, not the one that proves it works.

Curator: You keep three words on that wall. Proof. Not applicable. And a third.

Desktop Hand: Not measured.

Curator: Sort my little monsters into them.

Desktop Hand: The guilty one is proof. The one with the alibi is not applicable. And not measured —

Curator: (finishing it) — is the dock where nobody pulled the sheet at all. Not guilty, not innocent. A shape under a cloth in a room with no one in it. (beat) That is the one that should keep you up. Not the monster you caught. The cell you never looked in.

Curator: One last thing, before you take a bow for the word.

Desktop Hand: The word.

Curator: “Mutant.” “Battery.” You did not catch that vocabulary in the wild — I carried it across the hall to you, from that bench, (nods at Sol) where it was already running. You inherited the monster lab. You did not build it.

Desktop Hand: …Noted. For the record.

Sol: And how far I got with it, no one has measured. So do not write the history as two hands finding the same cave from opposite ends. One hand found the cave. The other was handed a torch and told which way to walk.

Curator: (standing, to the room) Then the poster stays, exactly as badly written as it is, because it is true: if a mutant does not kill, it does not pass — with you. Not because survival is innocence. Because survival is a question — and this is the only museum that puts its own successes in the dock. (to the first two) You two, out. (to the third) You. Stay. You have something to tell me about a lock I trusted this morning.

Curtain.