The darkest hour / Barbara Erskine.

Love is as uncertain and as untameable as war. In the summer of 1940, most eyes are focussed on the skies above the South of England. The battle for Britain has just begun. But young Evie Lucas has eyes for no-one but a dashing young pilot called Tony. Evie has a glittering career as an artist ahead of her but seems to be wasting her time sketching endless portraits of Tony. She wants his parents to have something to remember him by in case it all goes wrong in the war. Seventy years later, and recently widowed art historian Lucy is trying to put the pieces of her life back together. And in order to do that, Lucy needs to uncover the mystery surrounding a painting in her home. But as she accidentally ends up stirring up a hornet's nest of history which has been deliberately obliterated, Lucy finds herself in danger from people past and present who have no intention of letting an untold truth ever surface.