Although in many ways this is a complex narrative, the story in essence is quite straight forward. I will give this in outline without giving too much away.
Flora de Barral is the only child of a rising star in the world of London finance, the founder of a new investment bank that soon crashes after as string of bad investments, taking the savings of the great and the good along with it. Sound familiar? Except this book was published in 1910 and the great de Barral is subsequently arrested, tried and locked up in prison. Flora, whose Mother is deceased, is left effectively orphaned by this catastrophe and left at the mercy of an unforgiving world.
Enter the Fynes who are neighbours of Flora and witness her practically instantaneous ruin. One minute she is the heiress of an apparent vast fortune, the next completely pauperized. Ultimately Flora is taken under Mrs. Fynes wing, who is apparently sympathetic to her plight but in whom she also finds in her, and other lost young female souls, a useful sponge to expound her early feminist thought. It is while Flora is staying with the Fynes in the countryside that she is introduced to Mrs. Fynes emotionally repressed brother Anthony, a lonely thirty-something Captain in the merchant marine. Through Flora Anthony's repressed sexual and emotional fervour find full force, however the motives behind Flora's acceptance and marriage to Anthony are from the first questioned.
Whilst the basic plot is simple, the novel's complexity arises from Conrad's exploration of the psychological motives behind the actions of the various characters. The story also provides a vehicle for Conrad, through his narrator Marlow, to muse on various philosophical points concerning human nature and the motives of men. The prose style is rich, complex and subtle; it is a book that most readers will need to read with great care (as I did) as it is quite easy to get lost in the complexity of the narrative. It is however worth the effort as Conrad slowly draws you into this strange intrigue and also transports the reader into the lonely scenes of Conrad's late Victorian/ Edwardian England; the bleak Thames estuary, lonely dockyards, grey East End Street's and its underclass in the shadows.
The climax of the plot (which I won't divulge for obvious reasons) was no doubt a concession to commerciality and sits a little strangely with the rest of the books tone. However the book is hugely rewarding and won't disappoint fans of Conrad. For those new to Conrad `The secret Agent' might be a better place to start.