The Black Chamber by Dane Schiffmann

FBI Agent Jennifer Kingsley has never felt so alone. Discredited and suspended she is drawn into a murder investigation that leads her into the world of electronic surveillance and terrorism. With the help of covert operative, Jack Harmon, a man she doesn’t trust, she stumbles onto the trail of a terrorist cell operating in the United States. Framed for the murder of two police officers, Kingsley and Harmon are hunted by every law enforcement agency in the country as they race against time to stop a horrible attack. Too late they realize that they are being manipulated by a shadowy organization operating within the Federal Government known only as the Black Chamber.