It's the early 1800s and Michael Fitton, now a Lieutenant in the Royal Navy, has command of the 10-gun schooner Gipsy, which he uses to capture the enemy privateers who disrupt the trade between the British held Caribbean islands. Despite his successes the largest and most profitable privateer ship, the Spanish Senora, still remains at large and all Fitton's hopes rest on tracking her down and taking her. Instead, he is obliged by his orders to accompany the new Governor of St Lucia to his appointed island.

However, far from being the dull duty that he imagines the journey proves to be more adventurous than Fitton had anticipated. Rescuing the attractive Comtesse de Regmy, the former French Governor of St Lucia's widow, leads Fitton to concoct a hazardous plan as he discovers that St Lucia is in the hands of the Senora pirates. Secretly landing on the island Fitton and his men must execute a night attack to recapture the gun battery above the town, the key to possession of St Lucia, before confronting the Senora in an exhilarating sea chase.

First published in 1997 Lieutenant Fitton continues the adventures of Michael Fitton.