«Out of the Dark» by Adele Geras

Rob Stone comes back from the horrors of the First World War with a ruined face and a broken heart. Lonely, unable to forget the things he has seen, and haunted by the ghost of his dead Captain, all that Rob has left is a picture of the Captain's family. Rob sets out to find them, hoping that by bringing them the picture, he can bring peace to the Captain's ghost - and to his own troubled heart.