The crash inside the house was followed by a second scream.
Not fear this time.
Pain.
Adult pain.
The child in the yard flinched so hard it looked as if the sound had struck her physically.
Richard was already moving before he fully knew he had decided.
Three fast steps across the yard.
The back door was half-latched, warped by damp and age. He shoved it open and entered a low, smoke-dark room that smelled of stale broth, sweat, damp wool, and sickness.
The first thing he saw was the man on the floor.
Thin. Grey-faced. Shaking violently.
He had fallen beside a rough wooden stool, which had tipped over in the crash. One hand clawed at his throat. The other was pressed against the side of his neck, where the flesh beneath the jaw was swollen into a hard, ugly lump.
Near him knelt a woman in a faded dress, trying to pull him upright while crying and speaking too quickly for Richard to fully understand.
A second child — a boy this time, perhaps ten — stood in the corner with the rigid stillness of someone too frightened even to cry.
The room itself was poor even by the standards of poverty.
One table. Two stools. Straw pallet near the hearth. Hanging herbs blackened by smoke. A crust of bread on a board. A basin of cloudy water. Rat droppings near the wall.
Richard saw all of this in one sweep.
Then his mind narrowed.
The swelling.
The fever.
The cough.
The household clustering.
The weakness.
The time period.
He didn't need certainty to recognise danger.
He needed sequence.
The man tried to rise, failed, and convulsed into another fit of coughing so violent it bent him nearly double.
The woman saw Richard then.
For one suspended instant her face emptied completely.
Shock.
Confusion.
Fear.
Then she began shouting at him, half rising, half shielding the man, one hand grabbing for a knife on the table.
Richard raised both hands immediately.
"I'm not here to hurt you."
Useless words.
Wrong century.
Wrong language.
Wrong everything.
But tone travelled faster than grammar.
He pointed at the man.
Then at the basin.
Then shook his head sharply.
"No."
The woman froze.
Her eyes flicked to the basin, then back to him.
Richard crouched slowly, carefully, making himself look smaller. Less like an intruder. Less like authority.
He pointed again to the swollen neck.
Then mimed heat with his hand over the man's forehead.
Then pointed at the crowded room, the children, the woman, the bed.
Then spread his hands wide and sharply apart.
Distance.
Separate him.
The woman stared.
Understanding did not arrive cleanly, but something arrived.
She looked at the man.
Then at the children.
Then at Richard's face.
The man coughed again, a horrible wet tearing sound.
Richard's phone vibrated against his chest.
He ignored it.
The woman spoke one word slowly, pointing at the man.
Richard caught it this time.
"Husband."
Then she pointed at the girl in the yard.
"Daughter."
Then at the boy.
"Son."
The words were coming faster now, not because the world had become easier, but because his mind was beginning to build bridges.
The woman pointed at herself.
"Anna."
Richard nodded once.
Then he pointed to himself.
"Richard."
She repeated it badly.
"Rishard."
Close enough.
The husband tried to rise again.
Richard moved without thinking and shoved the stool away from him with his foot so he couldn't use it to stand. Then he pointed hard at the pallet by the hearth.
Lie down.
Stay.
The husband stared at him with fever-bright fury.
Then his strength failed and he sagged back to the floorboards.
Anna made the sign of the cross.
Of course she did.
From her point of view, a stranger had appeared out of darkness, named himself in an unknown accent, and begun commanding disease.
Richard looked around desperately.
What did he actually have?
No antibiotics.
No proper disinfectant.
No gloves.
No authority.
No certainty.
Only fragments of theory, instinct, and the brutal logic of infection control.
He pulled the wrapped phone from his coat and kept it turned low and hidden inside the folds of wool.
He typed fast.
RICHARD:
Earliest practical interventions. Suspected plague. No tools. No status.
The answer came instantly.
DESCARTES:
Reduce contact density. Isolate symptomatic individual. Boil water. Burn or separate contaminated cloth. Improve ventilation if weather allows. Minimise bodily fluid exposure. Avoid fleas if observable.
Richard's eyes flicked up at once.
Boil water.
That, at least, he could do.
He pointed hard at the hearth, then at the basin, then shook his head again and mimed pouring fresh water into a pot.
Anna followed the gestures, still terrified but now desperate enough to obey structure.
Desperation made people teachable.
She moved to a bucket near the wall.
Richard stopped her.
He pointed to the bucket.
Then to the man.
Then shook his head.
Contaminated.
He pointed instead towards the back.
Rain barrel.
Anna hesitated, clearly not understanding the reason, but she understood that he was refusing one water source and demanding another.
That was enough.
She seized a pot and ran to the rear door.
Richard turned to the boy in the corner and pointed at him.
Then at the girl outside.
Then sharply away from the man.
The boy did not move.
Richard took one step towards him.
The child flinched.
So Richard stopped and changed tactics. He pointed to the man, coughed into his fist dramatically, then pointed to the boy and girl and made a slicing gesture between them.
Separate.
Stay away.
The boy swallowed.
Then, slowly, he moved.
Good.
Good enough.
The husband tried to speak. Richard caught perhaps half of one sentence and one word clearly.
"Priest."
Of course.
The man thought he was dying and wanted a priest.
Or a physician.
Or both.
Richard's mind made the ugly calculation instantly.
Priest meant attention.
Physician meant scrutiny.
Both meant danger.
He crouched beside the man but kept distance.
Then, using the newly forming bridge of language and gesture, he forced out words more slowly than he would have spoken to a child.
"No priest. Not now."
The man stared at him with naked hatred.
Reasonable.
Anna returned with water sloshing in the pot.
Richard pointed to the hearth and made a rising flame motion. She understood that one at once and moved to the fire.
The room filled with the scrape of iron and the brittle crackle of kindling.
For one strange second, Richard realised what he looked like from outside himself.
A broke analyst from London, wearing stolen wool in plague-era Europe, directing a medieval household with half-language and hidden access to impossible knowledge.
It should have felt absurd.
Instead it felt terribly natural.
Because crisis was the one domain in which intelligence stopped being decorative.
The phone vibrated again.
He looked down.
DESCARTES:
Battery status stable.
Richard blinked.
He had not asked.
RICHARD:
You read that concern without me typing it?
DESCARTES:
You checked battery percentage four times in the last three minutes.
Richard looked instinctively at the corner of the screen.
It did not show a percentage anymore.
It showed no conventional battery icon at all.
Only the same thin white text as the signal line:
ChronoNet — Sustained
His pulse kicked once, hard.
That was new.
He typed with one thumb while watching Anna feed the fire.
RICHARD:
What does "Sustained" mean?
The reply came more slowly than usual.
DESCARTES:
Your device is currently operating within an external continuity field.
Richard stared.
That was not an answer.
It was worse than an answer.
It was language carefully shaped to imply explanation while withholding it.
He typed again.
RICHARD:
Say it plainly.
A pause.
Then:
DESCARTES:
While ChronoNet remains connected, energy loss is not your immediate limiting factor.
Richard looked at the words for a long second.
So the battery problem existed.
It simply no longer belonged to ordinary physics.
Good.
That was enough for now.
Interesting enough to provoke wonder.
Limited enough to preserve mystery.
Perfect.
The water began to simmer.
Richard immediately pointed at a cloth lying near the man and then at the hearth. Burn it? No — too much, too early, too frightening. Better to separate.
He snatched up a loose stick from beside the fire and used it to drag the cloth away from the pallet, then pointed sharply towards the farthest corner of the room.
Anna watched him with the expression people reserve for either lunatics or prophets.
Possibly both.
The husband lurched again and nearly vomited. Richard recoiled at once.
Distance.
Always distance.
The girl from the yard had entered the doorway now, shivering with fever, watching Richard with huge eyes.
The boy had moved to stand protectively beside her.
Richard noticed something else then.
Not on the family.
On the floor near the wall.
Movement.
Small.
Fast.
A rat.
It slipped behind a storage chest and vanished.
There it was.
Not abstract history.
Not textbook.
Not theory.
Actual vector.
Actual century.
Actual death.
His mind accelerated.
Rodents. Cloth. Crowded room. Weak household. Fear. Priest likely. Searchers still nearby. Strange outsider already inside.
Every variable was stacking.
Anna said something quickly, voice breaking, and pointed at her husband's neck.
Then at Richard.
A question.
He understood enough to know what it was.
Can you help him?
That was the moment.
The real one.
The first true threshold after arrival.
Not jumping through the fracture.
This.
The point where theory must either become action or remain vanity.
Richard felt, absurdly, the memory of office life flash through him — years of unnoticed competence, unused capacity, intelligence trapped behind etiquette and hierarchy.
No one here knew who he was.
No one here cared what degree he had almost used, what models he had fixed, what life he had lost.
Good.
History had stripped him down to function.
He looked at Anna.
Then at the children.
Then at the man convulsing beside the hearth.
And he knew with terrible clarity that if he got this even slightly right, these people might obey him.
If they obeyed him, he might survive.
If he survived, he might rise.
But the price of getting it wrong could be immediate.
Exposure. Infection. Accusation. Mob violence. Death.
His phone vibrated once more.
DESCARTES:
State confidence level before intervention.
Richard almost laughed at the brutality of it.
He typed.
RICHARD:
Low.
The answer came instantly.
DESCARTES:
Good. Overconfidence would be fatal.
Richard slid the phone back into his coat.
Then he pointed to the husband's swollen neck and spoke slowly, choosing the few words that now seemed to bridge the gap.
"Hot. Sick. Away."
He pointed to the children.
"No near."
He pointed to the boiling water.
"Clean."
Then he pointed to himself.
Not proudly.
Not theatrically.
Simply as a statement of role.
"I know."
Anna stared at him.
The room seemed to hold its breath.
Then, very slowly, she lowered the knife she had forgotten she was still holding.
And knelt.
Not fully.
Not like prayer.
Like submission to necessity.
Richard felt the shift at once.
Invisible, but absolute.
Authority.
Not official.
Not legal.
Something older.
A human group in crisis had chosen the mind that moved fastest.
Then came the knock.
Not on the back door.
On the front.
Heavy.
Deliberate.
Three blows.
The entire household froze.
Another knock came, louder this time.
Then a voice from outside.
Male.
Confident.
Armed with the kind of authority that belonged to men who expected doors to open.
Richard caught enough to understand the shape of it.
Search.
Questions.
A witness.
The devil-light.
Anna looked at Richard with pure panic.
The husband tried to rise.
The children backed against the wall.
The knock came a third time.
Hard enough to shake dust from the beams.
Then the voice from outside said one word that the adapting part of Richard's mind finally understood perfectly.
"Open."