CHAPTER ELEVEN #2
Henley's expression suggested she'd been wrestling with the same question. "Either we're looking at two different killers, or the same killer adapting their methods based on available resources."
James had been circling the scene, studying it from different angles with the methodical attention of someone who'd processed hundreds of crime scenes as a detective. Now he stopped near the shallow pool of water where Linda had died, crouching down to examine something.
"Isla, look at this."
She joined him, shining her flashlight where he was pointing. The water in the depression was murky and stained, but at the bottom—pressed into the accumulated silt and sediment—was a clear handprint. Palm and fingers, slightly blurred by the water but unmistakable.
"That's where he held her down," James said quietly. "Pushed her face into the water and kept pressure on the back of her head until she stopped struggling."
The image was vivid, horrifying in its simplicity. Linda Graves had been brought to this abandoned tunnel, attacked from behind, then drowned in inches of water while the killer's hand pressed between her shoulder blades, holding her under until her lungs filled and her struggling stopped.
It was intimate violence, personal and direct in a way that David Langford's heat-induced death hadn't been.
Yesterday's killer had modified systems, created conditions, then walked away while their victim slowly cooked to death.
Today's killer had gotten their hands dirty, had felt Linda's body fight and then go still beneath their touch.
"Two different killers," Isla said, though she didn't quite believe it. "Or one killer with two very different methods."
"The location is the common factor," James said, standing and brushing dirt from his knees.
"Both victims died in the steam tunnel system.
Both were lured or brought here deliberately.
Both deaths required intimate knowledge of this infrastructure—not just the active sections, but the abandoned ones too. "
Morrison approached, holding an evidence bag containing Linda's phone.
"We pulled this from her purse. Last text message she sent was to her daughter at 10:53 PM: 'Going into maintenance tunnels with client.
Should be quick. If you don't hear from me in 30 minutes, call police and give them this location: Harbor Drive maintenance complex, steam tunnel access point 4. '"
"Access Point 4," Isla repeated. "But we're at Access Point 11."
"Exactly. So either she got turned around in the tunnels and ended up here by accident, or—"
"Or she was brought here deliberately," James finished. "The killer intercepted her at Access Point 4, then guided her through the tunnel system to this location."
Isla pulled out her phone and opened the schematic Carol Martinez had sent her yesterday—the map showing all seventeen access points and the corridors connecting them.
Access Point 4 was on the eastern edge of the network, near the harbor.
Access Point 11 was on the western edge, almost a mile away.
"That's a long walk through these tunnels," Isla said, tracing the possible routes with her finger. "Multiple intersections, dozens of places to turn around or realize you're being led somewhere you don't want to go."
"Unless she trusted whoever was guiding her," James said. "If someone presented themselves as a maintenance worker or security personnel, if they seemed official and helpful, she might have followed them thinking she was being escorted to safety."
It fit the profile that was slowly emerging—a killer who understood both the physical infrastructure of the tunnel system and the psychology of their victims. Someone who could present themselves as trustworthy, who could lure people into isolated locations, who could adapt their methods based on what resources were available.
Someone very, very dangerous.
"Dr. Henley, what can you tell me about the head wound?" Isla asked, returning her attention to the body.
Henley gestured for Isla to move closer, then carefully lifted Linda's head to expose the injury.
The back of her skull showed a depressed fracture, the surrounding tissue bruised and swollen.
"Blunt force impact, probably from a pipe or similar metal object.
Struck with considerable force—enough to fracture the skull and likely cause immediate loss of consciousness or severe disorientation. "
"Defensive wounds?"
"None on her hands or arms. She didn't have time to fight back or protect herself. The attack came from behind, sudden and unexpected."
Isla thought about Linda Graves's purse, about the pepper spray that had never been deployed. A social worker experienced enough to carry protective equipment, cautious enough to text her daughter with location updates, but still caught completely off guard by an attack in these tunnels.
"She thought she was safe," Isla said quietly. "She thought whoever was with her was helping her."
"Until it was too late," James agreed.
One of the crime scene techs called out from across the chamber, and Morrison moved to see what they'd found. Isla took the opportunity to step back, to look at the scene as a whole rather than focusing on individual details.
Two victims. Two very different deaths. But both required extensive knowledge of the steam tunnel system—knowledge that went beyond what a typical city employee would have.
Yesterday's killer had known how to modify digital controls, how to create lethal heat in a specific chamber.
Today's killer had known about abandoned sections, had navigated through nearly a mile of dark corridors to reach this particular location.
And both victims had been lured or coerced into the tunnels based on false pretenses.
David Langford had received text messages suggesting a meeting about his workplace complaint.
Linda Graves had been told a client needed help.
In both cases, the killer had exploited their victims' sense of duty, their desire to do the right thing.
"We need to figure out the connection between Langford and Graves," Isla said, pulling out her phone to make notes. "Why these two people specifically? What links a Public Works pipe fitter to a county social worker?"
"They both work for the city," James offered. "Or worked, in Langford's case. Maybe that's the connection—city employees being targeted."
"But why? What's the motive?" Isla's frustration was bleeding into her voice, and she took a breath to control it. Getting emotional wouldn't help Linda Graves or David Langford. Only solid investigative work would catch their killer.
Morrison returned from his conversation with the tech, his expression grim. "They found something in the adjacent corridor. Footprints in the water and silt, leading away from this chamber toward Access Point 9. Looks like our killer walked out that way after the murder."
"Access Point 9," Isla said, pulling up the schematic again. "That exists in an industrial complex about three blocks from here. Security cameras?"
"We're checking. But that area's mostly warehouses and storage facilities—not a lot of surveillance coverage."
Of course not. The killer had chosen their exit point carefully, just like they'd chosen everything else about these crimes. Nothing was random. Nothing was left to chance.
Isla watched the crime scene techs work, documenting and collecting, building the foundation of evidence that would hopefully lead them to answers. Dr. Henley was preparing to transport Linda's body, coordinating with her assistants to ensure nothing was disturbed or lost in the process.
The morning was brightening beyond the tunnel entrance, December sunlight beginning to filter down the stairs in weak golden rays.
Up there, Duluth was waking up—people starting their commutes, businesses opening, the city moving forward with its daily routines.
Down here, in the cold and dark, Linda Graves would never see another morning.
"I want personnel records for everyone with access to the tunnel system," Isla said, her voice cutting through the ambient noise of the investigation.
"Not just current employees—anyone who's worked for the city in the past five years.
Maintenance workers, engineers, administrators, anyone who might have the knowledge to navigate these tunnels. "
"That's going to be a lot of people," Morrison warned.
"I know. But somewhere in that list is our killer.
" Isla's amber eyes swept across the scene one more time, memorizing details, committing the space to memory.
"They know this system too well. This isn't someone who studied blueprints or took a few tours.
This is intimate knowledge, the kind you only get from spending significant time down here. "
James was nodding, following her logic. "So we look for overlap—who had access to both the active sections where Langford died and the abandoned sections where Graves died? That should narrow the list considerably."
It was a good angle, probably their best lead so far. Isla made a note on her phone, adding it to the growing list of investigative tasks that would consume the next several days.
"Dr. Henley," Isla called out. "How soon can you do the autopsy?"
Henley looked up from her preparations, her expression sympathetic but firm. "I can start this afternoon, but Agent Rivers—I just finished Langford's autopsy yesterday. I'm going to need at least twelve hours of rest before I'm sharp enough to give this case the attention it deserves."
It was a reasonable request, and Isla knew pushing would only result in mistakes or oversights. "Tomorrow morning, then. First thing. I need tox screens, full analysis of the head wound, anything you can tell me about the killer's physical characteristics based on the angle of attack."
"You'll have everything I find," Henley promised.
Isla moved toward the tunnel exit, her mind already shifting from crime scene processing to the investigative work that waited back at the office.
They had personnel records to review, victimology to analyze, connections to find between two people who seemingly had nothing in common except their deaths in Duluth's underground infrastructure.
James fell into step beside her as they climbed the stairs toward daylight. Neither of them spoke until they reached the surface, stepping out into December air that felt shockingly clean after the damp chill of the tunnels.
"Two murders in two days," James said quietly, his blue eyes scanning the industrial district around them. "If this is a pattern, if there are more victims planned—"
"Then we're on a clock," Isla finished. "And we need to figure out what connects these victims before the killer moves on to whoever's next."