Read an extract of A Greater Love in The Mail on Sunday.
Today, Olga Watkins enjoys a very British life. She has lived in London for almost 60 years and her career took her from the household of a field marshal to the fashion industry, where she worked for Hardy Amies, Liberty and Jaeger.
Yet her early life could not have been more different. Olga was born in Yugoslavia in 1923 and raised in Zagreb. When the Gestapo arrested her fiance in 1943 she set off on an extraordinary 2,000-mile search for him across Nazi-occupied Europe risking betrayal, arrest and death.
As the Second World War reached its climax, Olga refused to give up – even as her mission led her to enter the gates of Dachau . . .