THE RHYTHM OF THE RUTHLESS

The timer on the monitor blinked with a ruthless, rhythmic green glow.

Twenty-five seconds.

Sera’s mind raced. The panic room was built to withstand an external artillery strike, but the concussive force of an interior C4 charge at point-blank range would turn the small space into a pressure cooker. The infants would suffer catastrophic barotrauma; their fragile, developing brains couldn't handle that kind of shock wave.

She had to get them out, or she had to disarm the charge. And she didn't have the bomb disposal training for the latter.

"Okay," she whispered to herself, her hands shaking as she shifted Nico and Leo into a more secure hold against her chest. "Okay, okay, okay."

She scanned the emergency supply racks inside the panic room. Medical kits, gas masks, thermal blankets, emergency comms, and tucked away in the corner—a heavy-duty service elevator override lever connected to the estate's private subterranean escape tunnel.

Dante hadn't just built a panic room; he had built an evacuation route for a king trying to protect an empire that was burning down around him.

She threw the heavy iron lever downward with all her weight. With a loud, pneumatic groan, the floor beneath the far corner of the panic room dropped away, revealing a dark, vertical shaft lit by emergency backup strips of red LED lighting. A steel ladder stretched downward into the damp, cool earth beneath the Chicago estate.

Fifteen seconds.

Sera didn't hesitate. She slung a heavy emergency medical bag over her shoulder, gripped the ladder rungs with one hand while keeping both infants tightly secured against her chest with the other, and began the terrifying descent into the dark abyss.

Above her, the world erupted.

A blinding flash of white light tore through the open doorway of the panic room, followed immediately by a deafening roar that shook the very foundations of the earth. The concussion wave slammed down the vertical shaft like a physical blow, nearly ripping Sera’s grip from the ladder. Plaster, dust, and shrapnel rained down around her like lethal hail.

She squeezed her eyes shut, biting back a scream as a jagged piece of drywall grazed her shoulder, tearing her blouse and drawing a warm line of blood.

In her arms, Nico and Leo let out a unified, piercing shriek of absolute terror. The sudden, violent sensory overload was pushing them right back to the edge of the neurological abyss.

Not now, Sera prayed frantically, her boots finally hitting the cold concrete floor of the subterranean tunnel. Not now.

She dropped to her knees in the damp dirt, pulling the crying infants tightly against her chest. She couldn't play the piano down here, and she didn't have her metronome. But she had her voice.

She closed her eyes, ignoring the deafening sirens wailing above ground and the sound of heavy boots echoing somewhere in the tunnel behind her. She began to hum—a low, resonant, vibrating tone straight from her diaphragm, matching the exact sixty-bpm resting rhythm she had used in the nursery.

One, two. One, two. You're safe. You're safe.

Miraculously, within thirty seconds, the frantic crying hitched, sputtered, and subsided into heavy, exhausted whimpers. Their tiny bodies stopped shaking, relaxing against her chest.

"Smart girl," a low, dark voice echoed from the shadows of the tunnel ahead.

Sera’s head snapped up.

Emerging from the gloom was a towering silhouette holding a suppressed pistol pointed directly at her chest. The man wore a tactical vest bearing the insignia of Vance’s crew—a jagged wolf’s head slashed with red paint.

"Drop the kids, sweetheart," the operative sneered, stepping closer, his finger twitching nervously on the trigger. "Vance wants the heirs intact. You? You're entirely optional."

Sera slowly stood up, shielding the sleeping infants with her entire body. Her mind went completely blank of fear, replaced by a sudden, razor-sharp spike of pure, unadulterated fury. They had threatened the boys. They had invaded her space. They had hurt Dante.

Before the operative could squeeze the trigger, a heavy, dark shadow dropped from the ventilation grating directly above him like a stone predator falling from the canopy.