1936. Europe is in turmoil. The Nazis have marched into the Rhineland. In Russia, Stalin has unleashed his Great Terror. Spain has erupted in civil war.

In Berlin, a young Englishwoman evades the Gestapo to deliver vital papers to a Jewish scientist. Within weeks, she is found dead, a silver syringe clutched in her fingers.

In an exclusive London club, a conspiracy is launched that threatens the very heart of government. When a renowned society couple with fascist leanings are found brutally murdered, a maverick Cambridge professor is drawn into a world of espionage he knows only from history books. The deeper Thomas Wilde delves, the more he finds to link the murders with the girl with the silver syringe - and even more worryingly to the scandal surrounding the Abdication . . .