2. Masquerade Protocol

The dialysis machine made a sound like a heart that couldn’t quite remember how to beat—a rhythmic whoosh-click, whoosh-click that seeped into my bones and calibrated itself to my pulse. I’d been Eli Carson for exactly seventy-two hours, and already the fiction was beginning to calcify into something that felt disturbingly real.

Lena Voss didn’t bring up my sleep-talking again. She didn’t need to. The words hung between us like an unsterilized scalpel, waiting to infect whatever fragile rapport we might have built. I spent the rest of that first session pretending to doze, running probability matrices in my head while the machine cycled two hundred and fifty milliliters of dialysate per minute through a synthetic membrane I was beginning to understand far too intimately.

The truth was, I hadn’t expected to be made so quickly. I’d studied undercover work, practiced my cover story until I could recite Eli Carson’s fictional childhood in the fictional town of Ashford, Verdania, with enough detail to fool a polygraph. But I’d forgotten that the most dangerous observers aren’t the ones looking for lies—they’re the ones looking for patterns. And Lena Voss, whatever else she was, had a mind built for pattern recognition.

After the session ended and the needle was pulled from my fistula—a real fistula, surgically created two weeks before the operation began, because authenticity requires sacrifice—I lingered in the clinic’s waiting area, pretending to read a six-month-old copy of Renal Care Quarterly. The real purpose was surveillance. I needed to understand the rhythm of Evergreen: who came and went, who had access to patient records, who might have known Warren Kepler’s dialysis schedule before the company had officially transferred his care.

The clinic was a study in controlled decay. The walls were painted a shade of beige that had been chosen, I suspected, because it didn’t show stains. The chairs in the waiting room were upholstered in a fabric that had been designed to resist bodily fluids and human warmth in equal measure. Every surface was wiped down every hour by a rotating cast of orderlies who moved with the hollow efficiency of people who had seen too much to be surprised by anything.

At 4:15 p.m., the shift changed. The day nurses packed up their bags and drifted toward the exit, replaced by the evening crew. I noted three orderlies, two registered nurses, one nurse practitioner, and a phlebotomist whose badge identified him as Marcus Webb. Webb was new—I hadn’t seen him during my earlier reconnaissance. He was tall, early thirties, with the kind of restless energy that suggested he’d rather be anywhere else. His eyes scanned the room the way mine did: cataloguing exits, assessing threats, building a tactical map.

Cop eyes. Or military eyes. Or something darker.

I filed him away for later investigation.

Lena Voss stayed through the shift change, which I learned was her pattern. She worked a twelve-hour schedule, arriving before dawn and leaving well after sunset, a schedule that gave her access to every phase of the clinic’s operation. I watched her move through the treatment bay, adjusting dialysate flow rates, checking vital signs, murmuring reassurances to patients who had long since stopped believing in reassurance. There was something almost maternal about her bedside manner—and something almost surgical about the way she turned it off the moment she stepped away.

At 5:30, she approached me.

“Mr. Carson, you’re still here.”

“I don’t have anywhere else to be.” The line was rehearsed, part of the Eli Carson persona: a lonely, divorced former teacher whose social circle had shrunk to the diameter of a dialysis chair. But it was also true, in a way I hadn’t anticipated. My real life had become so entangled with the operation that I couldn’t remember the last time I’d had a conversation that wasn’t part of the performance.

She sat down in the chair beside me, close enough that I could smell her hand sanitizer—a generic ethyl alcohol blend, but mixed with something faintly herbal. Rosemary, maybe. Or lavender. “You said the denominator was wrong. In your sleep.”

“I don’t remember saying that.”

“I think you do.”

I turned to face her. “What do you want me to say, Nurse Voss? That I’m secretly a mathematician? That I’m running from something?” The defensiveness was calculated. Push back too hard, and she’d know I was hiding something. Don’t push back enough, and she’d wonder why.

She smiled, and it was the kind of smile that didn’t reach her eyes. “I want you to say what you meant. Because in my experience, people don’t mutter statistical terms in their sleep unless they’ve spent a lot of time thinking about them.”

“Maybe I have.”

“A teacher?”

“Teachers can think about math. It’s allowed.”

“Not that kind of math.” She leaned back, crossing her arms. “The denominator. That’s epidemiology. It’s the population at risk. When you adjust the denominator, you change the rate. You can make a problem disappear by simply redefining who counts.”

I felt the air shift. She wasn’t just making conversation. She was testing me.

“That’s a very specific interpretation,” I said carefully.

“I read a lot.”

We sat in silence for a moment, and I calculated the odds that she was the killer. The glucose strip on her desk. The security expertise. The argument with Kepler three days before his death. And now this—a casual fluency in the language of statistical manipulation, the exact toolset someone would need to design the actuarial murders.

But probability is a tricky thing. The human brain is wired to see patterns where none exist. Lena Voss might be a killer, or she might be a nurse who’d taken an epidemiology course in college and happened to have an argument with a man who later died. I needed more data.

“I should go,” I said, standing. “Same time Thursday?”

“Same time Thursday.” She didn’t move. “And Mr. Carson? The Meridian algorithm that denied your fistula—I’ve been fighting it for three months. I know it was designed to flag patients like you. High cost, low predicted survival. The denominator was adjusted to exclude you from the population they consider worth saving.”

“And?”

“And I find that very hard to forgive.”

She walked away before I could respond, leaving me alone with the hum of the machines and the unsettling realization that I had just been given a motive.

That night, I met Miriam in the basement parking garage of a defunct shopping mall on the south side of Blackwood. It was the kind of place where drug deals happened in broad daylight and nobody asked questions, which made it perfect for a covert debriefing.

“She knows something,” I said, sliding into the passenger seat of Miriam’s unmarked sedan. “Or she suspects something. Either way, she’s not just a nurse.”

Miriam handed me a manila folder. “I ran a deeper background check. Lena Voss, thirty-four years old, born in Eastwick, Verdanian Republic. Bachelor’s in neuroscience from Blackwood University, master’s in healthcare administration. No criminal record. No red flags. Except…”

“Except what?”

“Except her mother died six years ago. End-stage renal disease. The death certificate lists cause as uremic cardiomyopathy, secondary to treatment delay. In plain English: her kidneys failed while she was waiting for a transplant approval that never came.”

I opened the folder and scanned the documents. Lena’s mother, Elaine Voss, had been a Meridian Health Alliance beneficiary. Her claim for a transplant evaluation had been denied twice, both times on the grounds of “insufficient medical necessity.” The physician reviewer who signed the denial was Margaret Sloane—Victim One.

“She has motive,” I said quietly. “For Sloane, for Kepler, for Chen. She blames the entire system for her mother’s death.”

“But does she have the training?” Miriam asked. “The potassium chloride injection, the midazolam dosing, the exsanguination—that’s sophisticated work.”

“She has a neuroscience degree. She understands pharmacology, anatomy, surgical technique. And she has access to the clinic, the security codes, the patient schedules.” I closed the folder. “She’s the most viable suspect we’ve identified.”

“So we bring her in.”

“Not yet. We don’t have enough for an arrest. If we tip our hand now, she’ll lawyer up and we’ll never get a confession. I need to get closer.”

Miriam’s expression hardened. “Closer how?”

I didn’t answer, because the truth was something I wasn’t ready to admit even to myself. The truth was that I wanted to understand Lena Voss, not just as a suspect but as a person. There was something in her voice, in the way she talked about adjusted denominators and populations worth saving, that resonated with a part of me I’d long tried to bury. A part that understood the seductive logic of justice delivered by calculation rather than by law.

“Be careful, Elias,” Miriam said finally. “The last guy who got close to a suspect like this ended up with his photo on a memorial wall.”

“I’m not the last guy.”

“No. But you’re human. And humans make mistakes when they start to care.”

The next morning, I arrived at the clinic early for my scheduled blood work. The pre-dialysis labs were a standard part of the charade—a way to maintain the medical fiction and keep my undercover credentials intact. The phlebotomist on duty was Marcus Webb, the new hire I’d flagged the day before.

“Left arm or right?” he asked, pulling on gloves with a practiced snap.

“Left. The fistula’s on the right.”

He nodded and began tying the tourniquet. His movements were efficient but not gentle. “You’re new here, right? Carson?”

“That’s right.”

“Tough break with the kidneys. How long you been on the machine?”

“Three months.” I delivered the line smoothly, watching his face for any reaction. “They say I might get a transplant if I can get the insurance sorted out.”

“Good luck with that.” He inserted the needle with a single, clean motion. “Meridian doesn’t exactly have a reputation for generosity.”

“So I’ve heard.”

He drew three vials of blood, labeled them, and placed them in the centrifuge rack. As he worked, I noticed a small tattoo on his inner wrist—a caduceus, the twin-serpent symbol of the medical profession, but stylized in a way that looked almost military. Beneath it, in tiny block letters, were the words “Semper Munitus.”

Always fortified. Or always armed, depending on the context.

“You serve?” I asked, nodding toward the tattoo.

He glanced down as if he’d forgotten it was there. “Army medic. Four tours. Got out two years ago.” He paused, then added, “You learn a lot about blood in a combat zone. How to stop it. How to draw it. How to read what it’s telling you.”

“And what’s mine telling you?”

He looked at me for a long moment, his gaze unreadable. “That you’re healthier than you’re pretending to be.”

The words hit me like a punch to the sternum. I forced my expression to remain neutral. “I wish that were true.”

“Your hematocrit is forty-two. That’s within normal range for a healthy adult male. Most dialysis patients hover around thirty, thirty-two if they’re lucky.” He pulled the needle out and pressed a cotton ball to the puncture site. “I’ve drawn blood from a lot of sick people, Mr. Carson. You’re not one of them.”

I stood up slowly, keeping my movements calm. “I’m on erythropoietin. That might explain the numbers.”

“EPO doesn’t bring you to forty-two unless you’re dosing at athlete levels.” He smiled, and there was nothing friendly in it. “But don’t worry. I’m not going to tell anyone. We all have our secrets.”

He walked away before I could respond, leaving me standing in the lab with a cotton ball pressed to my arm and the uncomfortable realization that I’d been made by not one but two people in the span of a single week.

I was slipping. Or they were sharper than I’d anticipated. Either possibility was dangerous.

That afternoon, I requested Lena’s assistance with a “prescription issue”—a fabricated problem designed to give me an excuse to spend time in her office. Her workspace was a glass-walled cubicle at the end of the treatment bay, cluttered with patient files, pharmacology reference books, and a small whiteboard covered in what looked like chemical formulas.

“You’re back,” she said, not looking up from her computer. “Most patients avoid this place between sessions.”

“Most patients aren’t as lonely as I am.”

She glanced at me over the rim of her reading glasses. “The lonely teacher routine. It’s a good look for you.”

“I’m not sure if that’s a compliment.”

“It’s an observation.” She gestured to the chair beside her desk. “Sit. What’s the prescription issue?”

I handed her a fake pharmacy printout. “The insurance is claiming I need prior authorization for my phosphate binder. I thought that was automatic.”

She scanned the document, and I watched her expression shift from professional neutrality to something harder. “It should be automatic. But Meridian changed their formulary policy last quarter. They’re now requiring step therapy for all renally-excreted medications. It means you have to fail on a cheaper alternative before they’ll approve the effective one.”

“That sounds like it could kill someone.”

“It has.” She set the printout down. “Last year, a patient named Caroline Redding died because Meridian delayed her phosphate binder approval for six weeks. Her calcium-phosphate product exceeded seventy, calciphylaxis set in, and she died of sepsis from necrotic skin ulcers. She was forty-one years old.”

The way she said it—clinical, precise, but with an undercurrent of rage so cold it could freeze mercury—told me everything I needed to know about Lena Voss’s capacity for justice.

“And nothing happened to the company?”

“Nothing ever happens to the company. They pay a fine, they issue a statement, they adjust the actuarial tables and move on.” She turned to face me fully. “That’s the problem with systems, Mr. Carson. They’re designed to absorb punishment without feeling it. You can’t hurt a corporation. You can only hurt the people who run it.”

The words hung in the air between us, heavy with implication.

“Is that what you think about?” I asked quietly. “Hurting the people who run it?”

She held my gaze for a long moment. Then she smiled, and it was the saddest smile I’d ever seen. “I think about a lot of things, Mr. Carson. Most of them would get me fired if I said them out loud.”

“Try me.”

“No.” She turned back to her computer. “I don’t know you well enough to trust you. And trust, in my experience, is the most expensive thing you can give away.”

I left her office with my pulse elevated and my mind churning. She was either the killer or she wanted me to think she was the killer, and I couldn’t tell which possibility scared me more. Because if she was innocent, then I was falling for a woman whose pain I had no right to exploit. And if she was guilty, then I was falling for a woman whose hands had drained the blood from three men, and the thing that disturbed me most was how little that fact seemed to matter.

That night, I sat in my apartment and reviewed the case files for the hundredth time. Sloane. Chen. Kepler. Each death meticulously planned, each murder a mirror held up to the system that had killed Elaine Voss and Caroline Redding and countless others whose names would never make the news. The killer wasn’t just taking revenge; they were making a statement. They were saying: you designed a system that measures human life in cost-benefit ratios. Now I’m going to measure your life the same way.

And somewhere in the back of my mind, a voice that sounded disturbingly like my own whispered: they’re not wrong.

I pushed the thought away and focused on the evidence. The glucose strip. The security bypass. The medical expertise. Everything pointed to someone with clinical training and inside access. Lena Voss fit the profile perfectly. But so did Marcus Webb, the combat medic who knew how to draw blood and how to read it. And so did a dozen other employees at Evergreen, each with their own grievances against the healthcare system.

I needed more data. I needed to get closer to Lena, to understand her motivations, her methods, her breaking points. And I needed to do it without losing myself in the process.

The phone on my desk buzzed. A text from an unknown number: “Check the fourth floor of the Meridian building. East stairwell. Something you need to see.”

I stared at the message for a long moment, then grabbed my coat and my badge. The game was accelerating, and I was no longer sure who was playing whom.