Although written fifth in the series, this is the first story in order of the life of George Abercrombie Fox, and really should be read first. It tells of his birth during the hanging of his namesake uncle for highway robbery, his mother lying in a gutter while his uncle died.
Fox lives a rough and tumble life on the streets as London poor, with parents trying to raise him as best they can and the streets trying to grind him down. Over the years he learns to take care of himself, but also to keep his eyes open and learn from what he experiences.
The Fox series of sea novels stands out in several key ways, mostly because Fox is not a gentleman, not a fine person, and he starts out at the absolute bottom of the ladder, working as a ships boy even younger than the midshipmen. There he learns about the life of a ship, battles to defend himself from bullies, and even deals with a pederast.
Fox starts out just interested in prize money, but begins to plan on being an officer, even a captain, and here his career in the navy begins. He's clever, he's inventive, he's driven, and he's ruthless, and all of that works well for him despite the many hardships he faces.
Like all the series, the book is fairly short, more a novelette than a full novel, and rips along at a nice pace while covering quite a bit of ground. Its more gritty and brutal than most sea series, with the protagonist anything but a gentleman and more than willing to kill if he needs to. He's often heartless and brutal, but shows a caring side as well, and is fiercely loyal.
Overall, a great read like all the series and worth looking into.