An Army counterintelligence agent, Kevin Keefer, receives a mysterious letter alleging espionage in the Pentagon. He and his superiors believe the organization involved is the Joint Chiefs of Staff (JCS). There is speculation that the letter's writer is somehow connected with his father's military service in World War II. An investigation is ordered by the JCS. The FBI, CIA, and the Naval Criminal Investigative Service become engaged in the plot. Keefer suspects there is a connection between the Pentagon case and a concurrent FBI investigation in Europe. He uncovers damaging information involving his own organization. After several trips to Europe, he discovers the author of the letter, leading to the solution of both his and the FBI's cases. Harry Jacobs graduated from Georgetown University and American University. During World War II, he served in Army Intelligence. His awards and decorations include five battle stars, a Bronze Star for Heroism, and the Croix de Guerre. He attended the Army Intelligence Training Center, Camp Ritchie, Maryland, and the British Order of Battle School in London.