After studying English at Oxford University, Andrew Williams worked as a senior producer for the BBC's Panorama and Newsnight programmes, then wrote and directed history documentaries. He is the author of two bestselling non-fiction books: The Battle of the Atlantic and D-Day to Berlin. His three acclaimed novels - The Interrogator, which was shortlisted for the Ian Fleming Silver Dagger Award, To Kill a Tsar, shortlisted for the Ellis Peters Award and the Walter Scott Award, and most recently The Poison Tide, are all published by John Murray. Andrew Williams lives with his family in Edinburgh. You can find out more about Andrew and his writing at www.andrewwilliams.tv and www.johnmurrays.co.uk, and you can follow him on twitter at @AWilliamsWriter or on Facebook