You are a secret agent working for the British in Berlin. You are due to go home on leave, but you are being followed-by your own people, or by the enemy. A man meets you in the theater and briefs you on a plot to revive the power of Nazi Germany. You do not believe him, but you remember that one of the suspects mentioned was a senior SS officer you met with in the days when you were working as a spy in Nazi Germany. The next day you make contact with a beautiful girl who may know something. Someone tries to kill both of you.

Your name is Quiller. You are the hero of an extraordinary novel which shows how a spy works, how messages are coded and decoded, how contacts are made, how a man reacts under the influence of truth drugs-and which traces the story of a vastly complex, entertaining, convincing, and sinister plot.
...

Never have Quiller s survival skills been so crucial as in the eerily prophetic mission code-named Solitaire. When the body of the agent he was supposed to protect is discovered in the burnt wreck of a car, Quiller must unveil the truth behind rumors of a bomb threat somewhere in Europe. Posing as an international arms dealer, he infiltrates Nemesis, a group of deeply religious Euroterrorist fanatics who follow a psychopathic and extremely intelligent leader. Quiller s final meeting with Nemesis transpires on Pan Am Flight 907, which carries twenty thousand pounds of explosives and forty cylinders of nerve gas and has disappeared from the radar screens. Quiller alone must stop the plane and its suicidal terrorist crew from reaching their unknown destination....