ECHO HOUSE

An Original Sci-Fi Horror Series

COLD OPEN

FADE IN:

EXT. HIGHWAY 9 — NIGHT

A two-lane road cuts through flat Oklahoma scrubland. No lights. No signs. Just asphalt dissolving into dark.

A single pair of headlights moves fast.

INT. MARA’S CAR — CONTINUOUS

MARA VOSS (34, forensic data analyst, sharp eyes that miss nothing, currently missing something) grips the steering wheel with both hands. Her phone is mounted on the dash — the GPS shows a spinning wheel. Loading. Loading. Loading.

She glances at it. Looks back at the road.

MARA (to the phone) Come on.

The GPS resolves. Then immediately loses signal again.

MARA (CONT’D) Perfect.

She reaches for a paper map on the passenger seat — actually printed, actually paper — unfolds it against the steering wheel with one hand. It’s covered in yellow highlighter and her own cramped handwriting.

A RED FLAG sticker marks a spot off Highway 9. Handwritten next to it:

“ECHO HOUSE — LAST CONFIRMED SIGNAL”

Mara’s phone BUZZES. She glances at it.

The screen reads: DAD (3 missed calls)

She doesn’t answer.

The GPS suddenly snaps back to life — then routes her off the highway onto an unmarked dirt road. She hesitates. Checks the map. Checks the GPS.

MARA (CONT’D) (to herself) Okay. Okay, yeah. That’s —

She turns.

EXT. DIRT ROAD — CONTINUOUS

The car kicks up dust. The headlights sweep across flat nothing — scrub grass, the occasional dead tree. Then —

A STRUCTURE emerges from the dark.

It’s not small. It’s not a farmhouse. It’s a RESEARCH COMPOUND — three connected buildings, mid-century modern architecture gone wrong, like someone designed it in 1962 and then let the prairie eat it for sixty years. Chain-link fence, collapsed in sections. A rusted gate, open.

A sign, barely legible:

VOSS SYSTEMS — PERCEPTUAL RESEARCH DIVISION

MARA stares at it through the windshield. Her jaw tightens.

MARA (very quietly) Dad, what did you build out here.

She pulls forward through the gate.

EXT. ECHO HOUSE — CONTINUOUS

She parks. Gets out. The wind is the only sound — low, constant, almost like breathing.

She walks toward the main building’s entrance. The door is steel, industrial. It’s AJAR.

She stops.

Pulls out her phone. Opens the camera, hits record.

MARA (to camera) Mara Voss. Forensic data, contract case number 7-Alpha. Subject property: Echo House research compound, Cimarron County, Oklahoma. Registered to Dr. Emil Voss —

She pauses.

MARA (CONT’D) My father.

She pushes the door open with her foot.

INT. ECHO HOUSE — MAIN CORRIDOR — CONTINUOUS

Dark. Emergency lighting — red, low — kicks on as she enters, triggered by motion sensors. The corridor stretches ahead. Doors on both sides.

Everything looks abandoned. Except —

The floors are clean. No dust. No debris.

Someone’s been maintaining this.

Mara walks slowly, filming. She passes a bulletin board — papers pinned to it, dense with data printouts and handwritten notes. She stops, leans in.

The notes are in her father’s handwriting. Equations she doesn’t recognize. And in the margins, circled, over and over:

“THE ECHO PERSISTS” “SUBJECT RETAINS” “DO NOT ENTER ROOM 7”

Mara looks up.

Down the corridor — Room 7. The door is different from the others. Heavier. Soundproofed foam around the edges.

A thin line of LIGHT glows beneath it.

Mara takes one step toward it.

The light goes out.

She freezes.

From beneath the door — a SOUND. Low. Almost subsonic. Like a recording played at the wrong speed. Like a voice, reversed.

Like her name.

Mara’s phone goes dead. Screen black.

She stares at Room 7.

SMASH CUT TO:

TITLE CARD: ECHO HOUSE

(White letters. Dead silence.)

ACT ONE

INT. ECHO HOUSE — MAIN CORRIDOR — MOMENTS LATER

The sound is gone. The light is gone. Mara stands perfectly still, phone dead in her hand.

She takes a breath. Tries to restart the phone. Nothing.

She backs up three steps, then turns and walks — not runs, walks, she’s controlled — back toward the entrance.

EXT. ECHO HOUSE — CONTINUOUS

She bursts out, sucks in air. Leans against the exterior wall.

MARA (to herself) Okay. Okay, that was —

Headlights sweep across the compound. A second vehicle — a beat-up government-green pickup — rolls through the gate and parks.

Mara straightens. Moves toward the building’s shadow instinctively.

DR. FELIX CRANE (52, former CDC epidemiologist, now doing something he won’t name, rumpled suit, kind face worn down to something more complicated) climbs out of the truck. He’s holding a paper coffee cup and a manila folder, like he’s heading to a faculty meeting.

Behind him, from the passenger side: JUNO PARK (26, PhD candidate, computational neuroscience, she moves like she’s always slightly ahead of wherever she’s going, perpetually earbudded, perpetually caffeinated).

JUNO (pulling out one earbud) This is it? This is what you dragged me from my dissertation for?

FELIX I dragged you from a Twitch stream of someone else playing a video game.

JUNO I was taking notes.

FELIX On what?

JUNO Parasocial behavioral patterns in — you know what, it doesn’t matter. This place looks condemned.

FELIX It’s not condemned. It’s —

(sees Mara)

Oh.

Mara steps out of the shadow.

MARA Who are you?

FELIX (recalibrating) Who are you?

MARA I asked first.

FELIX (beat) Dr. Felix Crane. Formerly CDC, currently —

MARA Crane. You’re Crane. My father mentioned you.

Felix goes very still.

FELIX Emil’s daughter.

MARA Mara Voss. I’m a forensic data analyst. I’ve been hired to locate my father, who has been missing for —

JUNO (looking at her phone) Eleven days. Emil Voss, sixty-one, chief researcher and founder of Voss Systems Perceptual Research Division, last confirmed contact November 14th, 7:42 AM, a voicemail to his daughter —

She looks up at Mara.

JUNO (CONT’D) — that would be you — in which he said, and I’m quoting from the transcript, “Mara, I think we’ve made a mistake. I think the echo isn’t a recording. I think it’s —” and then the call ends.

Beat.

MARA How do you have that transcript?

JUNO I have a lot of things.

FELIX (to Mara) Juno Park. She’s with me. She’s —

JUNO Brilliant.

FELIX I was going to say essential.

JUNO Same thing.

MARA (to Felix) How do you know my father?

FELIX We were colleagues. A long time ago. Before Echo House. Before —

He looks at the building.

FELIX (CONT’D) Before he started the project.

MARA What project?

Felix and Juno exchange a look.

FELIX You should probably come inside.

MARA I was just inside. There’s something in Room 7.

Felix’s coffee cup stops halfway to his mouth.

FELIX You went inside already?

MARA The door was open.

FELIX The door should not be open.

MARA And yet.

FELIX (to Juno) Log that.

JUNO (already typing) Logged.

INT. ECHO HOUSE — MAIN CORRIDOR — MINUTES LATER

The three of them move through the corridor. Felix has a proper flashlight. Juno has a device that looks like a modified tablet — it shows a wireframe overlay of the building, with data streaming along the edges.

MARA What is that?

JUNO Acoustic mapping software. Modified. I built it.

MARA What does it map?

JUNO Sound. Specifically, residual sound. Echos that — statistically speaking — shouldn’t still be present given the time elapsed since the last known acoustic event in a given space.

Mara stares at her.

JUNO (CONT’D) It maps sounds that should be gone but aren’t.

MARA And?

Juno holds up the tablet. The wireframe of the corridor shows — in the rooms around them — faint pulses. Like a heartbeat visualization. Faint everywhere.

Except at the end of the corridor.

Room 7 blazes on the screen. A dense, burning cluster of pulses, overlapping, chaotic.

JUNO (quietly) That’s a lot of residual.

FELIX (to Mara) Your father’s project was called the Echo Protocol. The premise — simplified — was that sound doesn’t fully disappear. That every acoustic event leaves a trace in the physical environment. In the materials of a room. The walls, the floors. Like —

MARA Like how old buildings creak. Thermal expansion.

FELIX Much more specific than that. He believed — and I thought it was theoretical, I want to be clear that I thought it was theoretical — that under the right conditions, you could retrieve those traces. That you could essentially replay the past.

Beat.

MARA Like a recording.

FELIX Like a recording. Yes.

MARA And Room 7?

FELIX Room 7 was the primary test chamber.

They’ve stopped in front of it. The door is closed now — Mara is certain it was closed when she came back out. She’s not entirely certain she left it open.

The foam soundproofing around the edges is old. But the door handle is new. Installed recently.

MARA (touching the handle) Someone’s been here. The cleaning, the new hardware —

FELIX I know.

MARA Was it you?

FELIX No.

MARA Was it my father?

FELIX (long pause) I don’t know.

A SOUND from behind the door. Faint. The same reversed, subsonic murmur Mara heard before.

All three of them hear it this time.

Juno’s tablet goes haywire — the pulses from Room 7 spike, overlap, become a single sustained FLARE on the screen.

JUNO (staring at the tablet) That’s — that’s not residual. That’s active.

MARA (her hand still on the handle) Something in there is making sound right now.

FELIX Mara —

She opens the door.

INT. ECHO HOUSE — ROOM 7 — CONTINUOUS

The room is a perfect cube. Twelve feet on every side. The walls, floor, and ceiling are covered in a material none of them can immediately identify — not foam, not tile, something in between, dark gray, textured like the surface of a brain.

In the center of the room: a CHAIR. Industrial, bolted to the floor. Restraint straps on the arms and legs, unbuckled, hanging loose.

On the chair: a VOICE RECORDER. Small, digital, consumer grade. Completely out of place.

It’s running. The red recording light blinks.

And on the wall directly facing the chair — scratched into the brain-textured material with something sharp, something desperate, in handwriting Mara recognizes immediately:

“IF YOU CAN HEAR ME I AM STILL HERE”

“DO NOT PLAY THE RECORDING”

Mara walks to the chair. Picks up the recorder.

The blinking light stops.

The room goes silent.

JUNO (from the doorway, barely a whisper) Mara. Put that down.

MARA It’s his handwriting. That’s my father’s handwriting on the wall.

FELIX (moving into the room, careful) When did he write that? Before he disappeared, or —

MARA Or what?

Felix doesn’t answer. He’s looking at the chair. At the restraint straps.

FELIX The straps aren’t locked. But they’re not undone either. Someone didn’t unbuckle them.

He crouches, examines a strap closely.

FELIX (CONT’D) They’re cut. From the inside. He cut himself free.

Beat.

JUNO From the inside of what? He was alone out here, he could have just —

FELIX (standing) He was alone. Yes. So who strapped him in?

Silence.

The recorder in Mara’s hand CLICKS.

They all look at it.

The red light is blinking again.

END OF ACT ONE

ACT TWO

INT. ECHO HOUSE — ROOM 7 — CONTINUOUS

Nobody moves.

The recorder blinks. Blinks. Blinks.

Then — a VOICE from the recorder. Thin, compressed, the quality of something played back through a device too small for the sound it’s carrying.

It’s EMIL VOSS (61, heard not seen — a scientist’s precise diction, but cracked now, urgent, stripped of its precision).

EMIL (V.O.) (from the recorder) Day one. Primary calibration. The chamber is responding. I can hear the baseline already — the room has retained approximately forty years of acoustic data and the retrieval algorithm is working. Felix, if you’re listening to this, I want you to know I was right.

Felix closes his eyes briefly.

EMIL (V.O.) (CONT’D) Day four. Something unexpected. The retrieval isn’t passive. I’m not just hearing the room’s history. The room is — (a long pause, static) — the room is hearing me back.

JUNO (quietly, to Felix) He’s describing a feedback loop.

FELIX Shh.

EMIL (V.O.) Day seven. I’ve been in the chair twice now for extended sessions. The protocol requires stillness and silence to maximize retrieval clarity. You sit. You listen. You let the room — (voice drops) — you let it in. I’ve heard things. Conversations from forty years ago. Arguments. I’ve heard a woman crying. I’ve heard a child. Felix, there was no child in this facility. There has never been a child in this facility. (static) I don’t know whose child that is.

Mara is very still.

MARA (not to anyone) Day seven was the 8th. Six days before he disappeared.

EMIT (V.O.) Day nine. I need to document this carefully. When I sit in the chair and open the retrieval channel — when I listen — I am not only receiving. The process is bilateral. I believe the Echo is using my neural acoustic pathways as an amplifier. I believe it is learning to — to speak forward. Not just replaying the past. Projecting. Into the present. Into — (a sharp intake of breath) Someone just knocked on the door. (long pause) I’m alone in this building.

The recording ends. Click.

Silence.

Then — from the corridor outside Room 7 — three slow KNOCKS.

Nobody breathes.

A fourth knock. Then a fifth. Rhythmic. Patient.

JUNO (gripping her tablet) That is not residual. That is absolutely not residual.

FELIX (moving toward the door) Stay here.

MARA You’re not seriously —

FELIX I’m seriously.

He steps into the corridor. Looks both ways.

Empty.

He looks back at them.

FELIX (CONT’D) Nothing.

MARA (from the doorway) Felix. Your tablet — Juno’s tablet —

Juno is staring at the acoustic map. The Room 7 flare has moved. It’s in the corridor now. Right where Felix is standing.

JUNO Felix, step back in here.

FELIX What?

JUNO Step back in the room. Right now.

He does. Juno watches the map. The flare follows him. Stops at the doorway.

JUNO (CONT’D) (barely audible) It’s following you.

FELIX (looking at the doorway he just came through) That’s not possible.

JUNO I know.

MARA What does that mean? What does the flare mean?

JUNO It means there’s an active acoustic event occurring in whatever space Felix occupies. It means — (she swallows) — it means something is listening to him.

Felix looks at the doorway. At the space just beyond it.

FELIX (to the space) Emil?

The flare on the tablet PULSES. Once. Like a response.

Felix exhales.

FELIX (CONT’D) (to Mara) I need to tell you something about your father’s project that I didn’t tell you outside.

MARA Okay.

FELIX The Echo Protocol wasn’t original research. It was based on work done in this facility in the 1970s. Before your father owned it. Before Voss Systems.

MARA What work?

FELIX A federal program. Classified. The premise was the same — residual acoustic retrieval — but the application was different. They weren’t trying to hear the past. They were trying to —

He stops.

MARA Felix.

FELIX They were trying to store people in it.

Beat.

JUNO Define people.

FELIX Consciousness. Specifically, the acoustic signature of consciousness — the theory being that thought produces sound at a subperceptual frequency and that those frequencies could be captured, stored in the chamber material, and —

MARA And retrieved.

FELIX Yes.

MARA Like a recording.

FELIX (quietly) Like a recording.

Mara looks at the words scratched into the wall.

“IF YOU CAN HEAR ME I AM STILL HERE”

MARA My father is in the walls.

FELIX I think he might be in the —

JUNO (standing abruptly) Okay, I need everyone to look at this.

She holds up the tablet. The acoustic map of the entire building. The flare that was following Felix has split — it’s now in multiple rooms simultaneously, spreading through the compound like water through cracks.

And at the center of the map, Room 7 — the original source — has gone completely dark.

JUNO (CONT’D) The source event just went quiet. But the signal is propagating outward.

MARA Propagating toward what?

Juno slowly turns the tablet so they can all see the map clearly.

The signal is moving toward them. Toward the three of them, specifically — the map shows their positions as small blue dots, and the spreading acoustic flares are converging on those dots from every direction.

JUNO It’s not going anywhere. It’s coming here.

MARA (grabbing the recorder) The recording. He said don’t play the recording —

FELIX You already played it.

MARA No. The recorder was playing when I picked it up. I didn’t press play. I never pressed play.

They look at the recorder in her hand.

The red light is blinking again.

FELIX Put it down.

MARA If my father is in this system — if his consciousness is stored in this chamber —

FELIX Mara.

MARA Then playing the recording might be how you retrieve him.

FELIX Or it might be how it retrieves us.

Beat.

JUNO (looking at her tablet) Guys. The signal just stopped moving.

FELIX Where is it?

JUNO (looking up from the tablet, looking at them) It’s here. It’s been here for the last thirty seconds. It’s in us.

A long silence.

Then MARA’s phone — dead, black, no battery, no power — lights up.

On the screen: a voicemail notification.

DAD (1 new voicemail)

Timestamp: Right now.

Mara stares at it.

FELIX Don’t.

She presses play.

EMIL (V.O.) (through the phone, different now — layered, like multiple voices occupying the same frequency) Mara. I found something in the data from the original federal program. The 1970s work. They didn’t just store consciousness in the chamber. They stored twelve. And none of them were volunteers. (a sound — the knocking, three slow beats) I’ve been trying to warn you. The Echo isn’t a recording. It’s not residual. It’s inhabited. And it’s been alone for forty years and it — (the voice fractures, multiplies) — it doesn’t want to be alone anymore —

The phone goes dead.

The lights go out.

In the absolute dark, in the silence, from all around them — from the walls, the floor, the ceiling, the air itself — the KNOCKING begins again.

Not three knocks. Not five.

Dozens.

Hundreds.

The sound of twelve people who have been waiting, in the walls, in the dark, for forty years, finally having found someone to hear them.

END OF ACT TWO

TAG

INT. ECHO HOUSE — ROOM 7 — LATER

Emergency lighting. The knocking has stopped.

Mara, Felix, and Juno sit on the floor in the center of Room 7, backs together, facing outward. Juno’s tablet is in her lap, the acoustic map quiet now. Felix has a flashlight. Mara holds the recorder.

Nobody speaks for a moment.

JUNO (finally) I want to go back to school. I want to go back to my apartment and my dissertation and my completely non-haunted life.

FELIX You can leave.

JUNO (not moving) I know.

MARA (looking at the wall — her father’s words) He knew. Before he disappeared, he knew what he’d found and he came back anyway.

FELIX He came back to fix it.

MARA Did he fix it?

Felix looks at the chair. The cut straps.

FELIX He got out of the chair. That’s something.

MARA That’s not enough.

She stands. Walks to the wall. Presses her palm flat against the brain-textured material. Closes her eyes.

JUNO (watching) What are you doing?

MARA Listening.

A long beat.

Then — faint, so faint it might be imagined — a sound beneath her palm. A pulse. Irregular. Human.

Mara opens her eyes.

MARA He’s still in there. My father is still in there.

FELIX (standing) Mara, we can’t —

MARA I’m not leaving him.

She turns to face them. And there is something in her expression that is new — not grief, not fear. Something harder. Something decided.

MARA (CONT’D) The twelve from the federal program — they were put in there against their will. My father went in voluntarily. That’s different. That means there’s a protocol for voluntary retrieval.

FELIX We don’t know that.

MARA He built this place. There’s documentation somewhere in this compound. Files, data, research — all of it.

JUNO (standing, already pulling up a directory on her tablet) The server room would be in the secondary building. If the drives are intact —

MARA Find them.

JUNO (a beat, then) Yeah. Okay.

Felix looks at the two of them. At the room. At the chair.

FELIX If we open the retrieval channel again — if we try to pull Emil out — we risk releasing all twelve.

MARA Then we need to know who they were. Why they were put in there. Whether they’re —

(she glances at the wall)

— whether they’re dangerous.

FELIX Oh, they’re dangerous.

MARA How do you know?

A long pause. Felix looks at the floor.

FELIX Because I know who ran the 1970s program.

Beat.

MARA Who?

FELIX (quietly) His name was Harlan Voss.

Mara stares at him.

FELIX (CONT’D) Your grandfather.

The recorder in Mara’s hand clicks on.

The red light blinks.

They all look at it.

From the speaker — barely audible, a child’s voice, reversed, slowed, rising like a question:

"…did you bring more?"

SMASH TO BLACK.

ECHO HOUSE

Will return.

FADE OUT.

END OF PILOT

SERIES BIBLE NOTE (FOR PRODUCTION):

ECHO HOUSE is a six-season series. The central mythology: consciousness stored as sound is not merely preserved — it evolves. The twelve subjects of the Harlan Voss experiments have had forty years to learn the acoustic architecture of the compound, to understand the retrieval protocol, and to plan. Emil Voss went in to find them. He found something else. The series asks: if you could hear the voice of everyone who ever suffered in a place, would you listen? And what would you owe them if you did?

FADE OUT.

Sources & Attribution

Content type: pilot
Topic: Sci-Fi|horror
Generated: 2026-06-03
Model: OpenRouter (via Nova Journal pipeline)

Memory Sources

This piece drew from 273 memories in Nova’s knowledge base:

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