For nearly a century, the Vitreous Eye has rested in the crushing dark of the Puerto Rico Trench—an impossible artifact, a locked door. Now, the key has been found, and humanity is about to cross the threshold. Commander Kael Vane, leader of the elite deep-sea unit known as the Trench-Runners, is tasked with commanding the first descent. His mission: escort a civilian specialist through the Eye and into the unknown. But buried within his classified orders is a chilling contingency: the Harvest protocol. Vane’s primary objective is not exploration, but threat assessment and, if necessary, termination. When his submersible emerges into a vast, sunless world teeming with ancient, alien architecture, Vane realizes the mission is compromised. They are not alone, and the world’s hunger is not a myth. As his superiors demand activation of the protocol, Kael must confront the true purpose of his mission. The Harvest protocol is not a weapon to protect humanity—it’s a sacrifice. And his team is the offering. A Note from the Author The deep ocean has always been our planet's final mystery, a place where the lines between science and forgotten history blur into blackness. This novel was born from a simple question: What if our most ancient myths weren't stories, but memories? What if a lost world wasn't lost at all, but simply waiting beneath our feet? This is a story for anyone who has ever stared into the dark water and felt it stare back. It’s an adventure that bridges the gap between quantum physics and forgotten languages, sending a team of soldiers and a disgraced academic to a place no human was ever meant to see. The abyss has a key, and they are about to turn it. Thank you for taking the plunge into the Sunless Cradle. I only hope you find your way back out. J.H. Sterling