Chapter 10 – The Measurement
Lucy didn’t sleep again that night.
Emma’s sleepy whisper—Goodnight—had echoed through Lucy’s mind long after the knocking stopped.
She lay in bed staring at the ceiling until the gray light of early morning crept through the curtains.
By the time Emma woke up, Lucy had already made another decision.
She needed proof.
Not guesses.
Not theories.
Something real.
If there were animals inside the wall, she would find signs. Scratches, holes, something in the structure of the house that explained the noise.
And if there weren’t…
Lucy didn’t allow herself to finish that thought.
A Simple Idea
After Emma left for school that morning, Lucy stood in the hallway outside Emma’s bedroom.
The wall looked exactly the same as always.
Smooth white paint.
No cracks.
No holes.
Nothing unusual.
Lucy crossed her arms.
“If something’s inside,” she murmured, “there has to be space.”
That was when the idea came to her.
Notebooks and guesses weren’t enough.
She needed to look at the structure of the house itself.
Lucy grabbed a measuring tape from one of the unpacked toolboxes in the garage.
Then she returned upstairs.
Emma’s Room
Lucy began in Emma’s bedroom.
She measured the wall where the knocking always came from.
“Eleven feet,” she whispered, writing the number down.
Then she measured the length of the room.
“Fourteen feet.”
Everything seemed normal.
But Lucy wasn’t finished.
She walked into the hallway and measured the same section of wall from the outside.
Then she measured the adjacent room—the guest bedroom that sat on the other side of Emma’s wall.
Lucy frowned.
Something didn’t match.
She measured again.
Slowly.
Carefully.
Emma’s bedroom wall to hallway corner:
Eleven feet.
Guest bedroom wall to the same hallway corner:
Nine feet.
Lucy stared at the measuring tape.
“That can’t be right.”
She measured a third time.
The numbers didn’t change.
There was a missing space.
Two feet.
Two feet of wall that existed in Emma’s room…
But not in the room beside it.
Lucy stepped back.
Her heartbeat began to quicken.
The Hidden Gap
Lucy walked into the guest bedroom.
The room was mostly empty except for a few stacked boxes.
She measured again.
Wall to wall.
Nine feet.
Lucy looked at the wall separating the two rooms.
From Emma’s side, it had measured eleven feet.
From this side, only nine.
That meant there was a hollow section inside the structure.
A narrow space between the two rooms.
Lucy pressed her palm against the wall.
It felt solid.
But now that she knew the measurements didn’t match…
The wall seemed different.
Almost suspicious.
Lucy knocked on it lightly.
Tap.
The sound felt slightly deeper than the other walls.
Lucy knocked again.
Tap.
The hollow tone was subtle—but unmistakable.
Lucy stepped back slowly.
“There’s space in there,” she whispered.
The realization made her skin prickle.
Because if there was empty space behind the wall…
The knocking had somewhere to come from.
The Floor Plan
Lucy hurried downstairs.
She began searching through the stack of papers she had received when buying the house.
Inspection reports.
Legal documents.
Utility records.
Somewhere in the pile she remembered seeing something else.
A floor plan.
Lucy flipped through the pages until she finally found it.
A faded blueprint of the house’s layout.
She spread it across the kitchen table.
The drawing looked old.
Much older than the other documents.
Lucy studied it carefully.
Emma’s bedroom.
The hallway.
The guest room.
Everything appeared just as it did now.
But then Lucy noticed something strange.
Between Emma’s bedroom and the guest room…
There was a narrow rectangular space drawn on the blueprint.
A small room.
Or maybe a storage area.
Lucy leaned closer.
Someone had scribbled over it with dark pencil marks.
The space had been crossed out.
Removed.
Lucy felt her pulse quicken again.
She checked the date printed in the corner of the blueprint.
1946.
Lucy sat back slowly.
The house had been modified.
At some point in the past, that small space had been sealed off.
Closed completely inside the wall.
Lucy stared at the drawing.
The hidden room wasn’t large.
Maybe only two feet wide.
But it ran almost the entire length of Emma’s wall.
Lucy imagined it now.
A narrow cavity sealed inside the structure.
Dark.
Airless.
Untouched for decades.
Lucy’s eyes drifted toward the staircase.
Toward Emma’s bedroom.
Toward the wall where the knocking came from every night.
The quiet house seemed to hold its breath.
Because now Lucy knew something she hadn’t known before.
The knocking wasn’t coming from pipes.
Or branches.
Or animals.
There was a space inside that wall.
And something inside it—
Was knocking.
