"Beneath miles of crushing black water, no one can hear you beg."

Inspector Selene Marrow thought she was here on a routine patrol. Instead, she finds herself sealed inside a steel coffin, her only lifeline severed by the man who commands it.

Captain Demien Thorne is cold, unyielding, and absolute in his control. With the flick of a switch, he owns the air she breathes, the silence she drowns in, the very pulse of her existence.

Every hiss of recycled oxygen is a reminder: she survives because he allows it. Every glance in the narrow dark pulls her deeper into a dangerous tether she cannot escape.

Enemies by design. Trapped by circumstance. Consumed by something far more suffocating than the abyss itself.

In the silent depths, desire burns hotter than oxygen. And the only question left is—when every breath is his, how long before her soul is too?