The Dark Circle: Linda Grant

All over Britain life is beginning again now the war is over but for Lenny and Miriam, East End London teenage twins who have been living on the edge of the law, life is suspended - they've contacted tuberculosis. It's away to the sanatorium - newly opened by the NHS - in deepest Kent for them where they will meet a very different world: among other patients, an aristocract, a young university grad, a mysterious German woman and an American merchant seaman with big ideas about love and rebellion. They are not the only ones whose lives will be changed forever.