Thermal Frequency: A Dark Sci-Fi Monster Romance

His finger found her pulse. Held it. Matched it.

Fourteen seconds of contact and her oxytocin spiked to 847 — post-orgasm levels from a single touch on her wrist.

Dr. Amara Sato measures everything. Core temperature. Heart rate. The exact nanomole concentration of an unclassifiable compound that has been rewriting her blood chemistry since she arrived on this island. She is a volcanologist. She has protocols.

Kael is not in her protocols.

Eight feet tall. Four arms — two he keeps hidden because they are the most sensitive part of him. Bioluminescent skin that shifts color when she touches it. He does not speak her language. He speaks in frequencies she feels through bone, through water, through the architecture of her ribs at 2 AM when he matches her heartbeat from thirty meters below the surface.

She should document him. Tag him. Report him.

She kissed the light on his chest instead.

Now a biotech extraction team is anchored offshore with a submersible and armed security. They want what is in her lagoon. They want what is in her blood.

And Amara — who has spent her entire adult life building distance between herself and anything she cannot quantify — has to decide how much of Dr. Sato she is willing to destroy to keep him alive.

She came to study thermal vents. She is leaving as something not quite human.

Perfect for readers of Ice Planet Barbarians, Morning Glory Milking Farm, and Drenched.

Monster romance · Scientist heroine · Deep-sea alien · Fated mates · Steamy · HFN ending

Abyssal Mates, Book 1. All characters 18+. This novel contains mature content.

⚠️ Content includes: alien biology, size difference, pheromone bond, and detailed intimate scenes. No cliffhanger.