Determined to find justice for her mother, top NYPD Homicide Detective Nikki Heat continues to pursue the elusive former CIA station chief who ordered her execution over a decade ago. For the hunt, Nikki teams once again with her romantic partner, Pulitzer Prize-winning investigative journalist Jameson Rook. Their quest for the old spy and the motive behind the past murder unearths an alarming terror plot - which is anything but ancient history. It is lethal. It is now. And it has already entered its countdown phase.