On a sunny afternoon in late June, Cambridge professor Joseph Reavley is summoned from a student cricket match to learn that his parents have died in an automobile crash. Joseph's brother, Matthew, an officer in the Intelligence Service, reveals that their father had been en route to London to turn over to him a mysterious secret document - allegedly with the power to disgrace England forever and destroy the civilized world. A paper so damning that Joseph and Matthew dared mention it only to their restless sister. Now it has vanished. What has happened to this explosive document, if indeed it ever existed? How had it fallen into the hands of their father, a quiet countryman? Not even Matthew, with his Intelligence connections, can answer these questions.
