Dig Two Graves: A Jim Marshall Mystery

FBI Agent Jim Marshall has managed to fake his own death in order to elude al-Qaida operatives seeking revenge for his outwitting them in their three attempts to kill the President and cause major havoc within the Capitol.
Now he is retired but the FBI asks him for his assistance to profile a Serial Killer operating in the Washington area. Area police departments are at wits end to identify and arrest this killer.
What begins as a simple task soon gets him entangled in the decadent crime of child molestation, which he soon discovers it involves a Congressman, and his daughter.
After successfully identifying the killer, Jim develops so much empathy for the killer that he begins to lose sight of his original assignment.
However, the worst of all possible things happens, someone uncovers his identity. He then must decide if he is willing to give in to the demands of the blackmailer, or deal with him directly in the only way he knows how, by killing him.
Now his one friend within the White House begins to question his earlier decision of assisting him in the cover-up of his faked death. As a result, Jim and his two close friends find that their lives are in danger once again, this time from within the government itself.