Obsidian Frequency

Obsidian Frequency is a cosmic-horror sci-fi thriller about two siblings who uncover an artifact that hums with an impossible signal-and a truth that can rewrite reality.

On the storm-lashed docks of the Marrow Coast, Leo Ramirez pries open a numberless black container and finds a fist-sized obsidian sphere that pulses with internal light. The instant he touches it, the city goes dark-and something beyond the Veil wakes.

Across the Azur Steppe, his sister Elara, an astronomer, captures the same impossible frequency in her deep-space data. What begins as curiosity becomes revelation: the hum is not random. It's intelligent.

Hunted by the Directorate and courted by secretive scientists at the Institute of Boundary Studies, Leo and Elara must decide whether to wield a key that can open paths between worlds-or seal it forever before others weaponize it.

Expect: rust-and-neon docks, clandestine labs, reality tears, and stakes that escalate from personal survival to the architecture of the universe itself.

• Genre: Science Fiction / Cosmic Horror / Thriller
• Perfect for readers of: Jeff VanderMeer's Annihilation, Blake Crouch's Dark Matter, and fans of Devs/Ex Machina
• Taglines: The hum is not a sound-it's a summons. • Between worlds, something has awakened.

Content notes: high tension, government pursuit, existential/cosmic dread, light body-horror imagery.