Mara seemed to reach the same conclusion. "We do not assume the rookie is involved," she said. "We also do not assume his behavior developed in a vacuum. Build the timeline from the outside in."
Nobody in the room argued. The case had just stopped being a paperwork investigation. It was now an integrity case touching the people who were supposed to protect the evidence.
For the next three hours, the task force rebuilt a timeline.
Fake maintenance companies had submitted invoices for playground repairs, irrigation upgrades, tree removal, and fence replacement. Parks employees approved the work. Finance clerks processed the payments. But moving materials in and out of municipal facilities after hours required access through locked service roads.
Several police officers had been assigned to the park district on overtime details during the same periods.
The invoices were one side of the scheme.
Access was the other.
Lieutenant Hale sat directly in the middle.
Marcus leaned back and stared at a whiteboard covered with names and arrows.
"This afternoon may have been random," Julian said.
"Maybe."
"You think Baines recognized us?"
"No."
"Then why are you looking like that?"
Marcus tapped one line on the board.
Hale -> overtime roster -> Baines.
"Because if Hale has been encouraging aggressive stops around the park, he may have been doing more than training rookies. He may have been creating a reason for people to avoid certain areas."
Julian understood.
"A hostile environment as unofficial security."
"Exactly."
No written order to clear the park. No memo telling officers to harass anyone. Nothing that could be subpoenaed.
Just a culture of stops.
Questions.
Searches.
People learning that sitting near the wrong maintenance road might turn an afternoon into an interrogation.
The next morning, the task force requested five years of stop data for Hawthorne Park and three surrounding recreation areas.
The pattern was immediate.
Pedestrian contacts had nearly tripled after Hale became patrol commander for the district. Search requests were unusually high. Arrests were not.
That difference mattered.
If an area truly had more crime, more stops would normally produce more contraband, more warrants, more charges.
Here, the stops produced mostly names, addresses, warnings, and people leaving the park.
Marcus studied one spreadsheet until his eyes blurred.
"They were not policing crime," he said.
Julian looked over his shoulder. "They were policing presence."
Marcus nodded.
And Officer Tyler Baines, eager to impress, had demonstrated the method perfectly in front of a body camera.
Two days later, Baines sat across from Internal Affairs with an attorney provided by the police union.
He looked exhausted but still angry.
"I was proactive," he said.
The investigator asked, "What crime did you suspect?"
"There had been thefts."
"When?"
"In the area."
"When?"
Baines shifted.
"I do not know the exact dates."
"What had been stolen?"
"Equipment."
"What equipment?"
"I would have to check reports."
The investigator slid a folder across the table.
"We checked. There were no theft reports from Hawthorne Park in the previous eight weeks."
Baines's attorney touched his arm.
"Take your time."
Baines looked at the folder but did not open it.
"I had a feeling."
"A feeling about what?"
"That something was wrong."
"Because two men were sitting on a bench?"
"Because they were evasive."
"Your body camera shows they answered your first questions."
"They refused ID."
"That happened after you demanded to search their bag."
"Which they refused."
"Correct."
The investigator leaned forward.
"Officer Baines, do you understand that refusing a consensual search does not create probable cause to search?"
Baines's face tightened.
"I understand procedure."
"Then explain the Taser."
Silence.
"They were noncompliant."
"With an unlawful search request?"
His attorney interrupted. "We object to the characterization."
The investigator nodded. "Noted. Officer, did Lieutenant Hale ever instruct you to increase pedestrian contacts around Hawthorne Park?"
For the first time, Baines looked genuinely surprised.
"What does Lieutenant Hale have to do with this?"
"Answer the question."
"He told the whole squad to be visible."
"Did he tell you certain areas needed to be kept clear?"
"He said maintenance had complained about trespassers."
"Which maintenance employees?"
"I do not know."
"Did you ever see a written complaint?"
"No."
"Did you ever ask for one?"
"No."
The investigator slid a second image across the table.
It was a still frame from a city traffic camera showing Hale's unmarked vehicle entering a closed service road at 1:14 a.m. beside a contractor's box truck.
Baines stared at it.
His anger disappeared.
"I did not know about that."
The investigator watched him closely.
"Know about what?"
Baines looked up too late.
His attorney closed his eyes.
The question had been a trap, and Baines had answered it.
He recognized the vehicle.
He understood there was something to know.
For the next twenty minutes, he said very little.
At the same time, Marcus and Julian were meeting with the woman from the park who had pushed the stroller.
Her name was Dana Pierce. She taught eighth-grade science and had recorded most of the encounter on her phone after hearing Baines raise his voice.
Finding Dana had taken less than an hour because she had voluntarily given Sergeant Ruiz her name before leaving the park. Convincing her to sit for a recorded interview took longer. She was not afraid of the investigators. She was afraid of becoming visible in a dispute involving the police department while raising two children alone.
Marcus called her himself. He did not tell her that she was obligated to help, because she was not. He explained what they were trying to establish: what Baines did before the second patrol unit arrived, what the two men on the bench were doing, and whether any words or movements could reasonably have been interpreted as a threat.
Dana listened, then asked the question Marcus had expected. "If I give you the video, does my name become public?"
"Not automatically," he said. "But I will not promise secrecy I cannot legally guarantee. If the case reaches a hearing or court, you could be identified as a witness."
There was a long pause.
"My son keeps asking whether the officer was allowed to point that thing at you," she finally said.
Marcus leaned back in his chair. "What did you tell him?"
"I told him adults were figuring it out."
"That was probably the safest answer."
Dana gave a humorless laugh. "He is six. Safe answers do not last very long."
She agreed to meet the next morning at the inspector general's office. She arrived wearing her school lanyard and carrying the same phone she had used in the park. Before anyone copied the file, the digital evidence specialist created a forensic image, recorded the device time, and confirmed that the video had not been edited. Dana watched the procedure with the wary attention of a science teacher supervising a lab.
"I did not film the beginning," she warned them. "I started when his voice changed."
"That is fine," Julian said. "We compare what you captured with the bodycam and dispatch record."
Marcus noticed Dana relax slightly at the word compare. They were not asking her to decide who was right. They were asking her to preserve what she had seen.