The heat of the day - Elizabeth Bowen

In The Heat of the Day, Elizabeth Bowen brilliantly recreates the tense and dangerous atmosphere of London during the bombing raids of World War II. 

Many people fled the city, and those who have stayed behind find themselves thrown together in an odd intimacy born of crisis. Stella Rodney is one of those who has chosen to stay. But for her, the sense of impending catastrophe becomes acutely personal when she discovers that her lover, Robert, is suspected of selling secrets to the enemy, and that the man who is following him wants Stella herself as the price of his silence. Caught between these two men, not sure whom to believe, Stella finds her world crumbling as she learns how little we can truly know of those around us.