Darlington’s heart stopped, spun around on one foot, clapped its hands thrice in the air, and declared: “Dios mio.” — Lutetia had to admit it: Darlington intrigued her. Sometimes she caught herself daydreaming of his diamond nose stud or his mysterious limp, and her heart would begin a firm, polite knock, like a guest requesting access to a cocktail party. Then the knock would increase in speed and intensity until…