A salvage operator discovers a derelict freighter adrift in the English Channel, setting off a high-stakes investigation into maritime fraud and survival. When John Sands boards the abandoned 'Mary Deare', he finds the captain, Gideon Patch, alone and desperate to keep the vessel afloat. As the two men struggle against the elements and the encroaching threat of the ship sinking, they must navigate a web of corporate conspiracy and legal peril. The narrative unfolds through a tense, first-person perspective that emphasizes the claustrophobic atmosphere of the damaged freighter and the harsh realities of life at sea.

This novel is widely regarded as a quintessential example of the maritime thriller genre, praised for its technical accuracy and atmospheric tension. Readers often highlight the author's ability to transform the mechanical details of ship salvage into a compelling narrative hook. The dynamic between the two central characters serves as the emotional anchor, grounding the more sensational elements of the conspiracy plot. It remains a staple of mid-century adventure fiction, frequently cited for its authentic portrayal of the dangers inherent in the English Channel.