Second Heartbeat Novels & Stories

Thump-thump. It was the steady, rapid beat of her heart, laced with anxiety. But underneath it, echoing in perfect, subtle synchronicity, was a secondary pulse—a softer, faster fluttering rhythm nested deep within her chest. Killian’s brows furrowed in momentary confusion. A double pulse? Was her heart weak? Was she sick? He didn't understand what it meant, but before he could process the anomaly, the rich, intoxicating scent of her fear and arousal flooded the air between them.

She waited for the nothingness, a final, defiant witness to the end of the world. And then, in the absolute zero of the void, she heard it: A single, rhythmic, human heartbeat. Thump-thump. It wasn't coming from the machine. It was coming from inside her own chest.

But after several seconds, Amber suddenly stopped. "Steele." I turned. She was staring at her hands. The strange mark on her neck was glowing. "What's happening?" I approached her. Then I heard it. A heartbeat. Not hers. Not mine. It was coming from beneath the ground. Slow. Ancient. Powerful. Amber looked at me. "Do you hear that?" I stared at the earth. "Yes." The heartbeat came again. Thump. Thump. Thump. Amber's eyes widened.

My interest was piqued as fear overrode my mind; I couldn't help but storm the doctor with several questions that were wrecking my mind. “What is wrong doctor? Is anything wrong with my baby? Is he in danger? Is he okay?” There were so many questions at go as my heart pounded fast in my heart. “Not at all, ma'am, the pup is in good health,” the doctor explained gently. “Okay, so what's the problem?” Kylian questioned almost immediately. “The pup seemed to have double heartbeats, and from my observations, it seemed to have two hearts in it, which is quite unusual and complicated.” The doctor explained.

I flinch, my muscles contracting. "Relax," César says from the corner. It is an order. The doctor presses the wand against my skin. He moves it around, searching. The pressure is uncomfortable. Then, a sound fills the room. ‘Whoosh-whoosh-whoosh.’ It is fast. Rhythmic. Strong. The sound of a second heart beating inside my body.

The ribbon was warm against her pulse. The second heartbeat under her ribs was awake. It had been awake since the moment she had opened her eyes this morning. It was beating in a slow steady rhythm against her own heart — not fighting hers, not crowding hers, but pulsing alongside it the way a second drummer comes in alongside the first drummer in a marching tune. Boom. Boom. Boom. Calm. Patient. There. She was no longer pretending it wasn't real.

"Baby hearts beat way faster than adult ones, hundred-fifty to hundred-eighty beats per minute usually." Serna listened to the rhythm, tried to separate the two twin beats from each other. Couldn't quite do it, they were too close together, but she could tell there were TWO, definitely two. "Which one's which?" She heard herself ask. "Can't tell." Elira moved the cone slightly. "But this one's—hear that? This one's on the left, other one's on the right." Left twin had a slightly faster beat, or maybe that was Serna's imagination. Right twin sounded steadier, more even.

He reached out, his small, gold-scarred palm pressing against the side of my chest. He didn't find warmth. He found the rhythmic, heavy thud of a heart that was being forced to recalibrate its frequency. Ga-chi... thump. Ga-chi... thump. Five seconds between each beat. A mechanical, deliberate pulse that echoed in the vaulted ceiling like the pendulum of a cathedral clock.

"Do you hear that? The heartbeats in this room... they're not in sync." I paused, my attention drawn away from the spell book. My pulse quickened, a surge of anticipation coursing through my veins. I closed my eyes, focusing on the rhythm that filled the space, and there it was—a dissonance, an irregularity in the symphony of heartbeats that surrounded us. A wave of dizziness washed over me, and I placed a hand on my chest, feeling the erratic rhythm of my own heartbeat.

Afterward, he held me through the aftershocks, cleaning me gently and massaging my back until I was limp in his arms. We lay in the quiet afterward, his hand stroking my belly in slow circles. Our son kicked happily, strong and steady. Then I felt something different. A second flutter. Lower. Distinct. I froze. “Damien…” He lifted his head. “What is it?” I grabbed his hand and pressed it to the lower part of my belly. Another kick came—separate from the first. His eyes widened. The fetal monitor we kept bedside picked it up seconds later—two distinct heartbeats.