“Something Dangerous” by Penny Vincenzi
Something Dangerous is the second book in the Lytton Dynasty series. In this book, the Lytton family has come through First World War and are rebuilding their publishing house. But it is not long before Nazi Germany is affecting the family and a number of ways, and then of course World War II with its bombings and terrors. Always fun to follow characters through history, which is what makes the Dynasty series so good. Published 2001.