Joseph Roth, whose many novels included The Radetsky March, was one of the most seductive, disturbing, and enigmatic writers of the twentieth century. Born in the Habsburg Empire in what is now Ukraine, and dying in Paris in 1939, he was a perpetual displaced person, a traveler, a prophet, a compulsive liar, and a man who covered his tracks. In this revealing ‘psycho-geography’, Dennis Marks makes a journey through the eastern border