The Rich are Different (by Susan Howatch)

(Amazon UK link)

'The Rich are Different' is is a Novel by Susan Howatch.

Dinah Slade, an ambitious but impoverished young British woman, propositions Paul van Zale, a rich American banker, in the hope of saving her family home.

An affair develops, until circumstances return Paul to his wife. Then the story moves to the United States. 

Paul's right-hand man Steve and nephew Cornelius take increasing roles in the story. The plot revolves around high finance, including the infamous Wall Street crash.

Each section of the novel is written from the perspective of a different character, which aids understanding and gradual revealing of personalities. Fast-moving, with touch characters and well-woven plots, and a fairly satisfactory ending.

Recommended if you like character-driven business novels.

(You can also read my longer review of 'The Rich are Different', written after re-reading eight years later)