The Costa estate sat like a concrete monolith upon the jagged, wind-whipped cliffs of the northern coastline.

Three weeks later, the brutalist fortress on the northern coastline felt entirely different.

The heavy atmosphere of impending death and paranoia had lifted, replaced by a tense, highly disciplined efficiency. In the east wing, Olivia Hayes now resided in a suite that had once belonged to high-ranking syndicate advisors. Gone was the shapeless gray housekeeping uniform; she wore tailored silk blouses and dark trousers, though she still carried her digital medical tablet everywhere she went like a shield.

The underground world whispered wild rumors about the mysterious new woman in Vincent Costa’s inner circle. Some claimed she was a high-level assassin sent by a rival syndicate; others whispered she was a brilliant underground doctor who had pulled the boss back from the gates of hell.

None of them knew the truth.

Right now, Olivia stood in the estate’s massive, commercial-grade stainless-steel kitchen, watching the head chef carefully plate a selection of seared duck breast and roasted root vegetables.

“Make sure the sodium levels on that plate are kept under five hundred milligrams,” Olivia instructed crisply, pointing at the dish. “His blood pressure is stabilizing, but we don’t need any unnecessary fluid retention.”

The chef, a towering Italian man who usually terrorized his sous-chefs, simply nodded with deep respect. “Yes, Dr. Hayes. Right away.”

Even the hardened enforcers had started calling her Doctor, a title she hadn't technically earned, though her clinical instincts had proven more accurate than a dozen medical degrees.

As the chef loaded the meal onto a silver serving tray, a young footman named Marco stepped forward to carry it up to Vincent’s private dining room.

Olivia’s eyes narrowed. She watched Marco pick up the tray. Something about the way the young man held the silver platter—his shoulders slightly too tense, his eyes darting toward the side exit—triggered that familiar, sharp prickle of academic intuition in the back of her mind.

Human behavior. The biochemical leak under pressure.

“Wait,” Olivia said sharply, stepping in front of the footman.

Marco stopped, his face tightening. “Yes, Dr. Hayes? The boss requested his dinner delivered immediately.”

“I’ll take it up,” Olivia said, extending her hands toward the silver tray.

“Oh, that’s not necessary, ma’am—I can handle it—” Marco stammered, taking an involuntary half-step backward.

“I said, I’ll take it,” Olivia repeated, her voice dropping into a tone that brooked no argument.

Before Marco could react, Olivia snatched the silver tray from his hands. She set it down on the steel prep table, her eyes scanning the components of the meal. The duck breast looked pristine. The roasted vegetables were perfectly cooked.

Her gaze shifted to the crystal wine goblet sitting beside the plate. It was filled with a rich, dark vintage of Barolo—Vincent’s favorite red wine, brought up from his private cellar specifically for tonight’s dinner.

Olivia pulled a compact, pen-sized chemical spectrometer from the pocket of her blazer—a portable testing device she had requisitioned from the estate’s secure medical lab three days earlier.

Marco’s face drained entirely of color. He took a sudden step toward the kitchen doors.

“Stop him!” Olivia shouted.

Two armed guards stationed by the kitchen entrance lunged forward, tackling Marco to the floor before he could reach the heavy oak exit.

Olivia ignored the scuffle. She popped the tip of the spectrometer into the crystal wine goblet, swirling the dark red liquid slightly, and waited five seconds for the digital readout on her handheld screen to flash.

The screen blinked red.

Tetrodotoxin. Concentration: Lethal dose.

A powerful neurotoxin derived from pufferfish, completely colorless, odorless, and tasteless in wine. Within ten minutes of consumption, it would paralyze the respiratory muscles, inducing a quiet, untraceable asphyxiation that would mimic a fatal stroke or a sudden cardiac arrest.

Olivia looked up from the screen, her heart hammering against her ribs. She stared down at the glass of wine, then looked at Marco, who was being hauled to his feet by the guards, struggling desperately in their grip.

“Who gave it to you?” Olivia demanded, her voice cutting through the kitchen like a razor.