In Sinking, a giant wave overtakes the Mammoth Ferry on its maiden voyage, and all of the ship’s cargo is swept overboard! An enterprising young islander, Olive, watches her cousin, Troy, attempt to retrieve the sunken cargo and notices air bubbles rising to the surface around him. Olive uses these bubbles as a cue and, with the help of a visiting inventor, designs a vehicle called a submersible that allows them to sink to the ocean floor and then rise back to the surface.
Back at the Intelligence Department, Albert Campion takes an interest in Saltey, a remote and tight-lipped Thames estuary village. The place has a long history of smuggling - and holds a secret rich enough to make someone threaten, terrorize, murder and raise the very devil to keep strangers away.
In the waning days of World War II, the Japanese tried a last desperate measure-a different kind of kamikaze mission, this one carried out by two submarines bound for the West Coast of the United States, their cargo a revolutionary new strain of biological virus. Neither sub made it to the designated target. But that does not mean they were lost.