Sin Club, by Robert Silverberg and Don Elliott (ePub/pdf)

In the springtime boom years of postwar London, a brilliant young financier has everything money can buy — except rest. When his pleasure-seeking friends drag him from their exclusive gentlemen’s club into a garish Soho strip joint, he expects nothing but tawdry amusement. Instead, he finds himself transfixed by a performer whose beauty and quiet intelligence pierce straight through his armor of ambition.

She is unlike any woman on that stage — poised, literate, aloof behind her dazzling smile — and soon the city’s most eligible bachelor is risking reputation, fortune, and hard-won self-command for a chance to know her. A discreet introduction leads to midnight meetings, and midnight meetings lead somewhere far more dangerous than the scandal sheets could ever imagine.

Set against the neon-lit underworld of Wardour Street and the marble corridors of high finance, this is a story of obsession, pride, and the perilous gap between what men show the world and what they crave in darkness.