The Traitor's Mistress by David Grace
Approx. 127,640 words.
Published on June 2, 2010.
The Secretary of State received a Secret file and reluctantly decided that the President and his mistress had to die. And they did. Five years later the Mistress's husband found her diary. The plotters soon got rid of him but by then Steve Grant had the diary. Now Grant is desperately searching for the Mistress's last, hidden file which is the only thing that might keep him alive.