A chance encounter at the Frankfurt airport plunges a diplomat into a sprawling international conspiracy involving a clandestine neo-Nazi movement. Sir Stafford Nye finds himself entangled in a web of global intrigue after a mysterious woman asks him to pose as her husband to bypass security. As he navigates the shifting loyalties of high-stakes espionage, he must decipher the true motives of the shadowy organization threatening world stability. The narrative unfolds through a series of rapid-fire encounters and shifting perspectives, emphasizing the precarious nature of post-war geopolitical order.

This work is often noted for its departure from the traditional closed-room mystery format that defined the author's earlier career. The narrative leans heavily into the espionage thriller genre, reflecting the geopolitical tensions prevalent during the era of its publication. Readers and critics frequently observe that the plot prioritizes broad, sweeping intrigue over the meticulous character studies found in the Poirot or Marple series. The book remains a distinct curiosity within the author's bibliography, illustrating a shift toward contemporary political themes and a more experimental, sprawling storytelling style.