An Underground Jewell

After being accused of espionage, Elizabeth Jewell must become a female sleuth to clear herself of the charges. Once she enlists the help of an old friend and her grandson, who works at the national space center, they began to uncover an Orwellian plot to take over the government and control of the American people. During her quest, she discovers that enemies have infiltrated our various government agencies as well as what happened to members of the family that were not accidental. Who killed them and how?