Coco at the Ritz

Though her name is synonymous with elegance and chic, the iconic Coco Chanel had a complicated dark side, and in late August 1944, as World War II drew to a close, she was arrested and interrogated on charges of treason to France.

Many of the facts are lost to history, partly through Chanel’s own obfuscation, but this much is known: the charges grew out of her wartime romance with a German spy, and...