Alan Riding, former Paris bureau chief of the New York Times, tracks a period of particular moral murkiness. He focuses on French writers and artists—the whole lot might, in an act of leveling, be called artistes—and their response to the German invasion of France in 1940. Mr. Riding is less interested, though, in the broader historical implications of his theme than in the human stories that emerge when the imagination is confronted by a violent reality. . . .

A nation that has always cherished its intellectuals, that rightly prides itself on its cultivation of the arts, is still tortured by the notion that the thoughtful, sensitive and most intelligent "Marianne" ever slept with the arrogant and brutal "Fritz." Mr. Riding shows that she did, and with considerable relish at that. . . .

Mr. Riding is very good at pointing to the complexities and ambiguities of the situation. He retraces much of the ground that Frederic Spotts covered in 2008 in The Shameful Peace, but the two authors, while both expatriate residents of France, take opposed positions. Mr. Spotts has nothing but scorn for those who compromised between 1940 and 1944, whatever the reason. Mr. Riding, by contrast, finds the behavior of most French thinkers, painters and performers all too human. Many vacillated. Many were concerned merely with survival. Many who joined the Resistance later had been quick to cooperate earlier. The entertainment industry hardly skipped a beat. More plays and movies were produced in those four years than in any comparable four-year period in the French past. . . .

Engrossed in the immediacy of his story, Mr. Riding rarely pans to the wider view. If he had done so, he might have noted that at the heart of the 20th-century tragedy, pumping the blood of Modernism as a broadly based cultural mode and mood, was not Paris or France; it was Berlin and Germany. Many of the impulses for creative destruction—industrial, technological, scientific and intellectual—emanated from this heartland of the European continent. But at the same time the violence that the French were inclined to blame exclusively on the alien intruder, le Boche, had a powerful resonance within.