Crossed lines / Marie Darrieussecq ; translated from the French by Penny Hueston.

When her mother offers Rose, a middle-class French woman, a Mediterranean cruise with her two children, she jumps at the chance to get away from her husband who drinks too much, and the renovations of their holiday house in the south. But one night the cruise ship comes upon a shipwrecked boat full of refugees, who are taken aboard. Without telling her teenage son, Rose gives his mobile phone to a young Nigerian refugee. Does she want to be some kind of a hero, ease her conscience? Now what is she in for? The secret phone connection takes Rose and her family on a journey of discovery.