In his 1996 novel, Birdsong, Sebastian Faulks showed himself to be a superb anatomist of men--and, just as importantly, women--at war. Indeed, his depiction of trench combat during World War I was almost painfully vivid: the equivalent of Wilfred Owen in prose, minus the lingering idealism. Now the author shifts his focus to the next global conflict in Charlotte Gray. This time the year is 1942, when "England was blacked out and afraid." The 25-year-old heroine has just traveled down from Edinburgh to London, hoping to make some contribution to the war effort. In short order she falls in love with a British pilot, mourns his disappearance and apparent death in France, and follows him across the Channel to assist the nascent French Resistance. On the face of it, these are the ingredients of a historical potboiler. But Faulks is such a gifted storyteller that we seldom notice the threadbare nature of the raw material. Instead, all but the most churlish reader will be drawn into Charlotte's tribulations, which are not merely geopolitical but amorous: "The last thing she needed was some uncontrolled romance. She wanted to be helpful, she wanted to lead a serious life, not to lie sobbing in her bed for a disembodied yearning. Still less did she wish to see it embodied, with the complication and the fear that all that would entail." (Note: Charlotte is that rare thing, a virginal heroine, at least until page 61.) What's more, the author's evocation of Occup