Chapter 4 - The Man in the White CoatBy the time Mara called St. Matthew’s, hospital security was already checking every stairwell, elevator, supply room, and staff corridor.
The pediatric floor locked automatically.
Lucy and Hannah were moved into an interior room with two officers outside.
Terrence remained at Lake Marston with Emily while Mara raced back to Briarwood.
Emily grabbed Terrence’s sleeve before paramedics placed her into the ambulance.
“Don’t let Nathan talk to Lucy.”
“He won’t get near her.”
“You don’t understand.”
“What?”
“He never needs long.”
Terrence frowned.
Emily’s voice shook.
“He makes people doubt what they remember.”
During the ride, she explained.
Nathan had not begun as a monster.
Or at least she had not recognized him as one.
They met fourteen years earlier when Emily worked in hospital administration and Nathan was completing specialized training. He was intelligent, attentive, funny, and unusually calm under pressure.
When the twins were born, he seemed devoted.
Then Hannah developed an ordinary childhood illness at four.
Nathan became obsessed with her symptoms.
Tests.
Monitoring.
Appointments.
He noticed every cough.
Every complaint.
Emily originally believed his medical knowledge made him overprotective.
Then strange episodes started.
Hannah became ill unexpectedly, often shortly after being alone with Nathan.
She recovered in the hospital.
Tests remained inconclusive.
Nathan always had an explanation.
Rare condition.
Unusual sensitivity.
Possible metabolic issue.
Doctors deferred to him because he was one of them.
Emily began keeping notes.
Dates.
Meals.
Symptoms.
Who had been present.
A pattern emerged.
“When did you confront him?” Terrence asked.
“Three months ago.”
“What did he say?”
“That grief had made me paranoid.”
“Grief?”
Emily stared through the ambulance window.
“My sister died last year.”
“I’m sorry.”
“Nathan used it whenever I questioned him. Said I wasn’t sleeping. Said trauma changes perception. Eventually he convinced our family physician to prescribe something for anxiety.”
Terrence understood.
“He was building a story about you.”
Emily nodded.
“If I accused him, I was unstable.”
“And the medication?”
“I stopped taking it after I realized he sometimes brought me drinks after we argued.”
Terrence looked at her.
“Did you have them tested?”
“I tried.”
“What happened?”
“The sample disappeared from my office.”
“Who could access it?”
“Nathan.”
She swallowed.
“Sunday night, I told him I had copied everything.”
“Where?”
“I didn’t tell him.”
“That’s why he locked you up.”
Emily shook her head.
“No.”
Terrence waited.
“That’s why he kept me alive.”
The difference mattered.
Nathan believed Emily possessed evidence he had not located.
He needed her to reveal it.
At St. Matthew’s, Mara arrived during lockdown.
Security director Paul Grayson met her outside the pediatric wing.
“The access log shows Mercer’s badge used at 1:19.”
“Camera?”
Grayson looked embarrassed.
“The camera covering that employee entrance was disabled.”
“Before or after?”
“Eleven minutes before.”
“So someone planned it.”
“Yes.”
“Any visual confirmation?”
“We found this.”
He showed her security footage from another corridor.
A man in blue scrubs, surgical mask, and white coat walked away from the camera.
Similar height to Nathan.
Face hidden.
Mara watched twice.
“Could be him.”
“Could be fifty doctors in this building.”
“Where does that hallway lead?”
“Parking garage, pharmacy access, laundry, loading dock.”
“Wonderful.”
Then a nurse approached.
“Detective?”
“Yes?”
“I think you need to talk to Lucy.”
Mara entered the girls’ room.
Hannah was sleeping.
Lucy sat beside the window with her knees drawn to her chest.
“Hey, Lucy.”
“Hi.”
“I heard you wanted me.”
Lucy nodded.
“A doctor came before the doors locked.”
Mara’s heartbeat quickened.
“Which doctor?”
“He wore a mask.”
“Did you recognize him?”
“No.”
“But something happened?”
“He brought me juice.”
Mara stared.
“Did you drink it?”
Lucy shook her head.
“Why not?”
Her voice became tiny.
“Daddy always brought juice after I asked too many questions.”
Mara immediately collected the cup.
The nurse said it had been placed on Lucy’s meal tray despite no beverage order.
The cup was sealed.
No visible tampering.
But Mara treated it as evidence.
“Lucy, what did the doctor say?”
“He said Hannah was going to sleep and I should rest too.”
“Anything else?”
“He called me Lulu.”
Mara’s eyes sharpened.
“Does anyone call you that?”
“Mommy sometimes.”
“Your dad?”
Lucy hesitated.
“When he wants me to do something.”
Mara stood.
Nathan had been close.
Perhaps inside the room.
She ordered another sweep.
Nothing.
By sunrise, Emily arrived under police protection.
Lucy saw her first.
“Mommy!”
The child ran so hard the blanket fell from her shoulders.
Emily dropped to her knees despite the nurse trying to stop her.
Lucy collided with her.
For several seconds, neither could speak.
Hannah woke to the sound.
“Mom?”
Emily turned.
The expression on Hannah’s face seemed to break every adult in the room.
Emily climbed carefully beside her daughter.
“I’m here.”
“You didn’t leave?”
“Never.”
“Daddy said—”
“I know what Daddy said.”
Hannah began crying.
“I’m sorry I got sick.”
Emily closed her eyes.
“No, sweetheart.”
She held both girls.
“You didn’t do anything wrong.”
Mara stood outside the room.
She had seen hundreds of families reunited.
This one felt less like a reunion than survivors reaching the same lifeboat.
At 8:30 a.m., a judge issued an arrest warrant for Nathan Mercer on charges related to unlawful confinement, child endangerment, and evidence uncovered thus far.
Police circulated his photograph statewide.
His bank cards had not been used.
His known phone was off.
His passport remained at the house.
His vehicle remained at St. Matthew’s.
He had disappeared.
But Emily believed he would not run permanently.
“He cares too much about being right,” she told Mara.
“Right about what?”
“That everyone else is stupid.”
Emily sat in a quiet hospital consultation room while her daughters remained guarded down the hall.
“He thinks people see what he allows them to see. He used to tell me medicine wasn’t just science. It was storytelling.”
Mara frowned.
“What does that mean?”
“If a patient walks into an emergency room and says they’re dizzy, doctors could think of a hundred causes. But if another physician says, ‘She has a history of panic attacks,’ suddenly everybody sees panic.”
“So he created context.”
“He controlled context.”
Emily looked at Mara.
“That’s what he did to Hannah. He didn’t only make her sick. He built a medical history that made each new illness seem believable.”
“And you?”
“The unstable wife.”
“Lucy?”
“The imaginative child.”
Mara understood the design.
Nathan had built separate narratives around everyone who might expose him.
“Where are your copies?”
Emily looked toward the door.
“I hid them with somebody Nathan doesn’t know.”
“Who?”
“My sister’s widower. Jack.”
“Where is he?”
“Oregon.”
Mara blinked.
“You sent evidence across the country?”
“Three months ago.”
“What evidence?”
“Videos. Medical records. Photos. Journal entries. Some of Nathan’s messages.”
“Why didn’t Jack contact police?”
“He doesn’t know what’s inside.”
“You sent it without explaining?”
“I told him it was estate material from my sister and asked him to store it.”
Mara stood.
“We need it.”
Emily nodded.
“I know.”
Before Mara could make the call, Terrence entered.
His expression was strange.
“What happened?”
“We got a hit on Mercer.”
“Where?”
“Not Mercer exactly.”
He handed Mara a printout.
“At 6:12 this morning, someone used his hospital credentials to remotely access patient records.”
“Whose?”
Terrence looked at Emily.
“Yours.”
Emily went pale.
“And?”
“Lucy’s.”
Mara’s jaw tightened.
“And Hannah’s.”
“From where?”
“A public network at Briarwood Central Library.”
They dispatched officers.
The library had opened early for staff.
No Nathan.
But a computer terminal showed recent use.
Browser history erased.
Security camera footage revealed a hooded figure leaving through a side exit.
Nathan was taunting them again.
Then the librarian brought officers something found beneath the keyboard.
An envelope.
Addressed:
DETECTIVE BENNETT
Mara opened it wearing gloves.
Inside was a photograph of Emily carrying the twins from their first day of kindergarten.
And a note.
Emily only knows half the story.
Below it:
Ask her why her sister really died.
Mara stared at Emily.
Emily stared back.
Her face lost all color.
“No.”
“What?”
Emily whispered, “That’s impossible.”
“What is?”
She pressed both hands to her mouth.
“My sister.”
Mara waited.
May you like
Emily looked toward the girls’ room.
“When Sarah died, Nathan was the doctor who found her.”
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