Primary Candidates is a Hunter Morgan novel about international and political terrorism. It takes place during the 2008 presidential primary season and features Morgan – now a Baltimore City police detective – and other characters from Mike Sutton's earlier works, No Survivors and High Order. It underlines current international tensions and America's soft and still vulnerable underbelly – easy targets of opportunity for terrorists, foreign and domestic.

As in High Order, Morgan works with Detective Andrew Hermann and reporter Dusty Rhodes to solve a series of domestic murders in the political arena, while the President responds to unthinkable international terrorist strikes at two major airports, railroad disasters, and the theft of some of the country’s most dangerous weapons.