Chapter 1 - THREE KNOCKS IN THE WALL
Knock.
Knock.
Knock.
The sound was so quiet that, had Mia not warned me, I might have convinced myself it came from an old heating pipe.
But I knew my house.
I knew every complaint its century-old bones made in winter.
Pipes clicked.
Floorboards sighed.
Radiators hissed.
Walls did not knock three deliberate times.
Mia stood beside my desk with a cleaning cloth clenched between her fingers.
The baby strapped to her back remained asleep.
Neither of us spoke.
Then the sound came again.
Knock.
Knock.
Knock.
I walked toward the library wall.
Mia immediately moved with me.
“No.”
She stopped.
My voice had been sharper than I intended.
“You stay there.”
She nodded quickly.
That frightened obedience bothered me almost as much as the sound behind the wall.
I crossed the study and pressed my palm against the carved walnut bookcase.
Cold wood.
Nothing else.
The built-in shelves covered almost the entire north wall of the room.
They had been part of the house when I purchased it eleven years earlier, or so I had been told.
The house itself was older than the Civil War.
Beacon Hill was full of buildings with sealed doors, forgotten stairways, servants’ corridors, and rooms that had been divided so many times that even architects occasionally disagreed about what belonged where.
But I had renovated this place from foundation to roof.
There was no room behind that wall.
At least there wasn’t supposed to be.
I turned.
“How long have you heard this?”
Mia stared at the floor.
“I don’t know.”
“That isn’t an answer.”
Her shoulders folded inward.
Immediately, I regretted my tone.
I spent my days dealing with men who interpreted gentleness as weakness.
That habit had apparently followed me home.
I crouched so we were closer to eye level.
“Mia.”
She slowly looked at me.
“You’re not in trouble.”
Her lower lip trembled.
“Neither is your mother.”
That was the sentence she needed.
I saw it in the way her entire face changed.
She took a breath.
“Maybe two weeks.”
My gaze moved back to the shelves.
“You’ve heard it for two weeks?”
“Not every night.”
“When?”
“When Mama cleans upstairs.”
“That means you’re here every night?”
She hesitated.
That hesitation answered me.
My jaw tightened.
“Why?”
“Mama doesn’t have anyone to watch us.”
She looked over her shoulder toward Lily.
“And the lady downstairs said babies can’t stay in the staff room.”
“What lady?”
Mia instantly realized she had said too much.
She looked down again.
“What lady, Mia?”
“Mrs. Mercer.”
I knew the name.
Helen Mercer had managed household staffing for nearly fifteen years.
She had been recommended by my late father’s attorney.
I rarely saw her because she worked mornings.
Grace worked evenings.
I had assumed schedules, payroll, supplies, and accommodations were being handled properly.
That assumption suddenly felt irresponsible.
“What did Mrs. Mercer say?”
Mia rubbed the edge of the cloth between her fingers.
“She told Mama if she brought us upstairs again, she’d fire her.”
My face hardened.
“But you’re upstairs.”
“Mama fainted.”
Every other concern vanished.
“When?”
“Tonight.”
“Where is she?”
“In our room.”
I stood immediately.
“Take me there.”
Mia did not move.
She stared at the bookcase.
Another knock sounded.
Only once this time.
Mia whispered, “See?”
I did.
And for reasons I could not explain, something about that single knock felt different.
Less like a signal.
More like desperation.
I removed my phone and called the one person I trusted to enter my home at two in the morning without asking foolish questions.
“Duca.”
A sleepy voice answered.
“Do you have any idea—”
“Anthony.”
Silence.
My head of security knew my tone.
“I need you at Beacon Hill.”
“What happened?”
“Bring a thermal scanner, two men, and the original architectural files from the renovation.”
A pause.
“Is someone inside the house?”
“I don’t know.”
“That isn’t comforting.”
“It wasn’t intended to be.”
I disconnected.
Mia looked worried.
“Am I in trouble?”
“No.”
“Is Mama?”
“No.”
“You promise?”
That word caught me unexpectedly.
Promises were dangerous things.
I had spent most of my adult life refusing to make them.
But I looked at the frightened six-year-old standing in my private study with a sleeping infant tied to her back because she believed homelessness depended on whether my desk was polished before morning.
“Yes.”
I said it carefully.
“I promise.”
Ten minutes later, I was walking down a narrow servants’ staircase I had probably used fewer than five times in eleven years.
Mia led me.
That fact embarrassed me.
This was my house.
Yet the child of one of my employees knew parts of it better than I did.
At the basement level, she opened a door beside the laundry room.
The room beyond was barely large enough for a twin mattress, an old dresser, and a portable crib.
Grace Harper lay on the bed.
Her face was gray.
A bucket sat beside her.
She opened her eyes when we entered.
Then she saw me.
Panic replaced exhaustion immediately.
“Mr. Duca.”
She tried to sit up.
I stopped her.
“Don’t.”
“I can explain.”
“So can your daughter.”
Grace looked at Mia.
The fear in her face was almost identical to Mia’s.
“Sir, please.”
“My doctor is coming.”
“No.”
Her answer was so fast that I paused.
“Why not?”
“I don’t need a doctor.”
“You fainted.”
“I’m tired.”
“You’re sick.”
“I’ll be fine.”
“You have two children in a basement room while your six-year-old cleans my study at two in the morning.”
Her eyes filled.
“Please don’t fire me.”
There it was again.
The same terror.
Different voice.
I glanced around the room.
A cracked plastic cup.
Children’s clothing folded into perfect squares on the dresser.
Half a loaf of bread.
A jar of peanut butter.
Three cans of formula.
Nothing else.
I had spent dinner at the Hampshire Club discussing whether a billionaire should settle a lawsuit quietly or destroy a competitor publicly.
The wine alone had cost more than everything in this room.
I suddenly felt sick.
“How long have you been living here?”
Grace closed her eyes.
“Three weeks.”
“Does Mercer know?”
No response.
“Grace.”
“Yes.”
The word was almost inaudible.
“She knows.”
“Why are you living here?”
“Our apartment building was sold.”
“We got notice.”
“I tried to find another place.”
“Everything wanted first month, last month, security.”
She looked at Lily.
“I didn’t have it.”
“And Mercer offered you this room?”
Grace gave a humorless laugh.
“Offered?”
She shook her head.
“She said I could use it temporarily if I worked additional hours.”
“How many additional hours?”
Silence.
“How many?”
“Four.”
“Every day?”
She nodded.
Without pay.
I knew it before asking.
My hands curled at my sides.
Before I could speak, footsteps sounded outside.
Anthony Russo entered without knocking.
He was fifty-two, broad-shouldered, perpetually unimpressed, and one of the few men alive who had known me long enough to tell me when I was wrong.
He took in the room.
Then Mia.
Then the baby.
Then Grace.
“What the hell happened?”
“Later.”
I looked at Grace.
“You’re being examined.”
She started to argue.
“Grace.”
I lowered my voice.
“You are not losing your job.”
She stopped.
“Your daughters are not being thrown out.”
Her eyes searched mine as if she didn’t know whether to believe me.
“Tonight, those are facts.”
I turned to Anthony.
“Doctor first.”
“Wall second.”
He frowned.
“What wall?”
Twenty minutes later, while my private physician examined Grace downstairs, Anthony stood inside my study with a thermal scanner aimed at the north bookcase.
Mia sat on the sofa with Lily beside her.
I had tried to convince her to sleep.
She refused.
Anthony slowly moved the scanner across the shelves.
Halfway down the wall, he stopped.
“What?”
He moved it backward.
Then forward.
“You were right.”
“About?”
“There’s a void.”
I stared at him.
“How large?”
“Hard to tell.”
“Maybe four feet deep.”
“Could run the length of the room.”
“That’s impossible.”
Anthony shrugged.
“Buildings don’t care what owners think is impossible.”
He knelt beside the lowest shelf.
“This bookcase is newer than the wall.”
“No.”
“Yes.”
“It was here when I bought the house.”
“That doesn’t make it original.”
He ran his fingers beneath the molding.
Then stopped.
“Well.”
I knew that tone.
“What?”
He reached behind a decorative carving.
There was a metallic click.
Mia whispered, “I knew it.”
A narrow section of shelving moved forward less than an inch.
Anthony looked at me.
I looked at him.
He pulled.
The entire bookcase swung outward.
Behind it was darkness.
Cold air rolled into the study.
Mia grabbed Lily’s blanket.
Anthony drew his weapon.
“Stay behind me.”
I almost laughed.
“In my own house?”
“Especially in your own house.”
He switched on a flashlight.
A brick corridor disappeared into darkness.
Dust covered the floor.
Except for one narrow trail.
Footprints.
Recent ones.
Anthony crouched.
“Someone has been using this.”
A sound came from farther inside.
Scrape.
Then a weak knock.
Knock.
Knock.
Knock.
Mia stood.
“That’s it.”
Anthony motioned one of his men forward.
I entered behind them.
The corridor was narrow enough that my shoulders nearly brushed both walls.
Twenty feet in, we found an old wooden door.
Locked from our side.
Anthony looked at me.
“That’s strange.”
“Why?”
“If someone’s inside, whoever locked this wanted them to stay there.”
He lifted the latch.
The door opened.
The beam of his flashlight crossed a tiny hidden chamber.
A chair.
Bottled water.
A blanket.
Blood on the floor.
Not much.
But enough.
Then the light found a man collapsed beside the wall.
He looked somewhere in his late thirties.
His shirt was torn.
One ankle was chained to an iron pipe.
Anthony moved toward him.
The man flinched.
“No.”
His voice was barely a whisper.
Then his eyes found me.
Everything in his expression changed.
Recognition.
Fear.
And something worse.
Pity.
“You’re Matteo Duca.”
I stepped closer.
“How do you know me?”
He laughed once.
The sound was broken.
“Because your father was right.”
My body went rigid.
“My father has been dead for nineteen years.”
The stranger stared at me.
“No.”
He whispered.
“Your father was murdered nineteen years ago.”
Behind us, the hidden corridor seemed to shrink.
Anthony glanced at me.
The man reached inside his torn shirt and pulled out a small brass key attached to a chain.
He pressed it into my hand.
“Don’t trust Mercer.”
I thought of Helen Mercer.
Then the man shook his head.
“Not Helen.”
His eyes started closing.
“The other Mercer.”
I grabbed his shoulder.
“What other Mercer?”
His lips barely moved.
“The one who owns your company.”
Then he lost consciousness.
May you like
And somewhere deeper inside the wall, a floorboard creaked.
Someone else was still there.
