Dangerous Crossing by Rachel Rhys 

A Richard and Judy autumn selection. England, September, 1939. Lily Shepherd boards a cruise liner for a new life in Australia and is plunged into a world of cocktails, jazz and glamorous friends. But as the sun beats down, poisonous secrets begin to surface. Suddenly Lily finds herself trapped with nowhere to go…

Australia, six weeks later. The world is at war, the cruise liner docks, and a beautiful young woman is escorted on to dry land in handcuffs. What has she done?