A salvage crew finds themselves ensnared in a high-stakes maritime conspiracy after discovering a vessel that should not exist. The protagonist must navigate the treacherous waters of the Mediterranean while contending with ruthless adversaries who will stop at nothing to keep the ship's secrets buried. As the salvage operation shifts into a desperate fight for survival, the narrative maintains a relentless pace, focusing on the technical realities of deep-sea recovery and the psychological toll of isolation at sea. The story unfolds through a tense, third-person perspective that emphasizes the claustrophobic environment of the salvage vessel.

This work is characterized by its gritty, technical approach to the maritime thriller genre, reflecting Brian Callison's established reputation for authentic nautical detail. The narrative relies on the harsh realities of life at sea to build tension, avoiding melodrama in favor of procedural accuracy. Readers likely appreciate the focus on the mechanics of salvage operations, which grounds the more sensational elements of the conspiracy plot. The book serves as a prime example of mid-century suspense fiction that prioritizes environmental atmosphere and professional competence as core narrative drivers.