The Phoenix Conspiracy by Richard Sanders
Summary: Calvin, an intelligence operative, is sent to eliminate a dangerous traitor. But, as he chases his prey across the stars, he realizes they are both pawns in a shadowy chess game. One that threatens humankind everywhere.
If he is to uncover the conspiracy he must confront–and embrace–the darkest elements of the galaxy. And throw himself, his career, and everyone he loves into the line of fire.