Lieutenant Michael Fitton, his captain and the rest of the crew of the armed schooner Gipsy, have been captured by the French. Imprisoned in a French gaol Fitton is left to brood over the disastrous and ill-conceived reconnaissance mission that helped put them there and to worry about whether or not their current state is his fault or that of the arrogant Major Harkness. But help is at hand in the guise of a charming Creole girl who offers Fitton a brief chance of regaining his freedom, but will he be able to avoid the many dangers that lay in wait for him?

The Martinique Mission, first published in 1999, was the penultimate adventure featuring Styles' hero Michael Fitton.