While the trail is cold, it is further complicated by the strange relations between the two victims and the man convicted of the crime. As they peel away what happened, what might have happened, and what actually happened, they encounter a vast conspiracy.
An unpublished book is still in the computer of one of the victims. A touch of blackmail adds to the murkiness because the names of some important people are revealed. Just plain police work, detecting leads to a solution.