Best Kept Secret by Jeffrey Archer
If you are going on a long road trip and need a good series of books to listen to, the 'Harry Clifton' series by Jeffrey Archer is a good bet.  With that said, I would not recommend reading them.  They are not particularly well written, but the story is awfully good and the British narrator is perfectly delightful, so they are a great 'listen.'  This third book in the series is just as good as the previous two (written about previously on this blog).  The story continues to follow Harry and Emma, now married and parents of two, as well as the brother-in-law Giles Barrington and their nemesis from the the war, Captain Alex Fisher.  We also get to know the rather tempestuous son of Harry, Sebastian Clifton.  I admit...I'm a sucker for stories of British aristocracy, boarding schools, and the bad guys getting their due.  The only frustration is the total cliff-hanger this book leaves - I was assuming this series was a trilogy - obviously not, per the last page.  Happy listening!