This fascinating book has a Dan Brown-like plot (but with much better writing). Academics search for clues to find missing persons and to research Vlad Dracula’s life (is he still living?). This research is conducted in medieval libraries (yay!) with much travel: Oxford, Istanbul, Budapest and Bulgaria. Actions happen in three times: the 1930s, 1950s and 1970s, often with parallel stories so the complex plot with much historical detail requires the full attention of readers. This is a really enjoyable read; thanks Steph, for this recommendation.