In the fourth book of Agent Lincoln Cain, this time he is sent to Melbourne, which has suddenly found itself at the mercy of a mysterious terrorist called the Luminary. Clues are left on the Dark Nemesis website as to the location of a reward for any would be criminal clever enough to solve them. Once found, a bomb is triggered to explode soon after, sending the city into total panic. Now in a race against every criminal in Melbourne, can Lincoln Cain, along with his new partner Madeline Jackson, be first to solve the clues, locate the bombs before they explode and ultimately stop The Luminary?