Something dangerous - Penny Vincenzi

The dazzling Lytton twins, Adele and Venetia, are born into the great Lytton publishing empire. In 1928, on their eighteenth birthday, they are rich and admired, with a confidence verging on arrogance. But the spectre of Nazi Germany is growing...

Gradually their privileged world darkens in unimaginable ways - but it is not just the twins whose lives have been irrevocably changed. Barty Miller, rescued from the London slums in babyhood by Celia Lytton, is clever, ambitious, and a complete contrast to the twins - and she faces temptation of the most unexpected kind...