“Don’t park where you usually do, Dad,” my twelve-year-old daughter told me on Tuesday, and by Friday she was locking both doors of my truck and whispering, “Now look behind us.” What I saw in the mirror was a gray sedan sitting where no car had any reason to be, its engine running and a man inside holding a phone toward us like a camera. That was the moment I realized my daughter had spent an entire week conducting an experiment because she believed someone was following her.
Chapter 1
My name is Jack Mercer, and for nineteen years I maintained traffic signals for the city of Fairview, Indiana. It was not glamorous work, but I liked it because machines did not lie very well. A controller cabinet recorded every button press, every fault, every light cycle, and every time somebody opened the steel door with a key.
My father had taught me that trade. Earl Mercer spent thirty years working the same intersections before his lungs and knees finally retired him, and he had one rule he repeated until it became part of my bones. “Change one thing at a time, Jackie. If you change five things and the problem disappears, you haven’t learned a thing. You just got lucky.”
My daughter, Lily, had absorbed the same lesson without either of us realizing it. She had ridden with me on weekend service calls since she was little, eating peanut-butter crackers in the truck while I tested pedestrian buttons. By eleven, she knew enough about signal timing to ask questions that occasionally embarrassed younger engineers.
My marriage was harder to diagnose.
Rachel and I had been together fifteen years. She sold insurance from a small office downtown, laughed loudly when she wanted to, and had once been the person I told everything. Over the previous three years, however, her phone had started spending more time facedown, her schedule contained unexplained appointments, and “We’re fine” became her answer whenever I asked if something was wrong.
I noticed.
Then I did what too many middle-aged husbands do when they are afraid of the answer.
I worked more.
On Monday, October 14, Lily called me during school. I was forty feet above Main Street replacing a signal head when her name appeared on my phone.
“Dad, can you pick me up at two-ten this week instead of three-ten?”
“Every day?”
“Yes.”
“Why?”
There was a pause.
“I want to try something.”
I should have asked more questions.
Instead I heard my father’s voice.
Change one thing.
“Okay,” I said.
Monday, I picked her up in my usual spot beside Fairview Middle School’s gym. Lily came out quickly, backpack on both shoulders, head down. She got in and said everything was fine.
Tuesday morning she called from the nurse’s office.
“Don’t park where you usually do, Dad.”
“Where?”
“Maple Street. Past First Methodist.”
“That’s four blocks.”
“I know.”
I parked there.
Lily appeared around the church three minutes later and climbed into the truck so quickly she nearly caught her backpack in the door.
Wednesday she directed me to the far end of the staff parking lot.
Thursday she told me to wait near the community garden six blocks away.
Each day she changed only one variable.
I should have understood sooner.
Thursday afternoon, I happened to inspect the intersection closest to her school, Fairview Avenue and Sixteenth. A pedestrian button there had supposedly been repaired repeatedly, yet when I pushed it, nothing happened.
I checked the city’s service records.
Nineteen complaints.
Nineteen.
Parents, a crossing guard, a grandmother, even a teacher had reported that same button over eleven weeks.
Each complaint had been closed by my foreman, Calvin Ross.
NO DEFECT FOUND.
Calvin had trained me years earlier. He was the kind of man who could splice wires in freezing rain while telling you exactly why the Colts needed a new offensive line.
He was also thorough.
Nineteen closed complaints without a repair made no sense.
I tested the button again.
Click.
Nothing.
A little boy eventually crossed without a walk signal because he saw traffic moving straight and assumed he was safe. A left-turning sedan swept across the crosswalk less than fifteen feet from him.
My stomach tightened.
I had my cabinet key on my belt.
I almost opened the control box right then.
I didn’t.
Some instinct told me not to touch anything until I understood what I was looking at.
That night, Rachel stood on our back porch talking quietly on her phone.
When she saw me, she ended the call.
“Work?” I asked.
“Yeah.”
“How’s Lily been acting to you?”
Rachel shrugged. “She’s twelve.”
“She’s had me picking her up early.”
Rachel’s eyes stayed on mine for a fraction too long.
“Huh.”
That tiny sound would live in my memory forever.
Friday morning, Lily gave me one final instruction.
“There’s an alley behind the laundromat on Carter Street. Back into it.”
“Why back in?”
“So we’re already facing out.”
I stared at her.
She wouldn’t explain.
At two-eleven, she came down the alley almost running.
She climbed into my truck.
Locked her door.
Reached across and locked mine.
“Dad.”
Her voice shook.
“Now look behind us.”
I checked the mirror.
Forty feet away sat a gray Chevrolet sedan.
A man was behind the wheel.
He held a phone horizontally at windshield level, pointed directly at my truck.
On his dashboard lay a fluorescent orange safety vest.
“He’s been there every day,” Lily whispered.
I turned toward her.
“What?”
“Monday he was by the gym. Tuesday I changed the time and the place, and he was near the church. Wednesday I changed where you parked again. He was there. Thursday I picked somewhere I never use.”
Her chin trembled.
“Today I picked this alley.”
I could hear my father.
Change one thing.
Lily had changed the time.
The man followed.
She changed the place.
He followed.
She changed the route.
He followed.
Only one thing remained constant.
Someone knew in advance where I would pick her up.
Lily looked at me.
“I only told you, Dad.”
My phone was sitting in the cup holder.
The screen lit up.
A message from Rachel.
Are you getting Lily early again? Where are you picking her up today?
I had never told my wife.
My hands went cold.
For one terrible second, I wanted to get out of the truck. I was six-foot-two, worked with my hands, and had a heavy pipe wrench behind the seat.
Then I remembered my father.
A frightened man changes everything.
A patient man finds the fault.
I reached over and touched Lily’s backpack.
“Seat belt.”
She stared at me.
“Dad—”
“Put it on. Don’t look behind us anymore. We’re going to drive out normally.”
“What if he follows?”
“Then we learn something else.”
She buckled in.
I started the engine.
“Tell me about school.”
“What?”
“Anything.”
She swallowed.
“I got a C on my history study guide.”
“We got a C?”
A frightened little laugh escaped her.
We drove out at eleven miles an hour.
The gray sedan stayed behind.
And that frightened me more than if it had followed.
Because a man who follows wants to know where you’re going.
A man who waits wants something to happen where you were.
