The Last Pill

Margot placed the amber **vitamin** D capsule on her tongue, her ritual at 3:47 PM exactly. From her desk on the twenty-fourth floor, she could see the storm gathering over downtown—a bruised purple sky that made the glass tremble. Below, the city prepared itself for **lightning** that would splinter the darkness in fifteen minutes, if the meteorologists were right.

She wasn't thinking about the weather. She was thinking about the man in the charcoal suit who'd been watching her for three weeks.

Not watching in that careless way people did—the appreciative glance, the accidental eye contact across the elevator. This was something practiced. Methodical. He always positioned himself where her peripheral vision caught him: the coffee shop downstairs, the bench in the park across from her building, three rows behind her in the Monday morning all-hands meetings. A **spy** in plain sight, though what corporate espionage could possibly involve a senior analyst who spent her days forecasting supply chain disruptions for midsize pharmaceutical companies?

Her therapist called it paranoia. Her mother called it an overactive imagination. But the supplement—that was new. A different bottle each Monday, appearing in her bag during lunch. Heroin, she'd thought at first, her mind leaping to the darkest explanation. But the lab she paid out of pocket confirmed: vitamin D, biotin, magnesium. Nothing illegal. Just disturbingly intimate.

The first drops of rain began to streak the window, distorting her reflection. Tomorrow she would confront him. She would demand answers. She would—

The email notification pinged. Subject: *Your test results*.

She opened the message and the room tilted. Her heart hammered against her ribs as she read the words again, again. Genetic markers. Early onset. familial pattern they'd missed in her twenties, resurfacing now with cruel precision. Memory loss, cognitive decline, irreversible within five years.

The man in charcoal stepped through her open door, closing it softly behind him. In his hand, a new supplement bottle.

"Your sister hired me," he said gently. "She's been trying to reach you for months. You blocked her number after the funeral."

The lightning finally struck, illuminating his face—exhausted, patient, devastatingly familiar.

"You're not a spy," she whispered.

"No. I'm your brother."

Outside, thunder shook the building. Inside, something else broke open.