Understrike (1965) is a parody spy novel by John Gardner.
[1] When a routine mission to the United States goes haywire, Boysie Oakes is faced with the weighty responsibility of being British Special Security's observer at the important test-firing of a new missile.
The test-firing of TREPHOLITE - a holocaustic missile designed to be launched from the latest thing in sub-aqua craft, USS Playboy.
As the action moves at speed from New York to San Diego, Boysie meets a colourful cast of characters including his opponent Vladimir Solev, and the gorgeous Chicory Triplehouse.
You can help Wikipedia by expanding it.See guidelines for writing about novels.