In this series finale, pathologist Dr. Lily Robinson races around the globe to hunt an assassin who, like her, finds poison the weapon of choice. A world-renowned climatologist is found dead off the Great Barrier Reef of northern Australia weeks before he's set to deliver his earth-shattering findings at the international Climate Council conference. Was it greed to maintain the status quo of fossil fuels-or revolutionary new science-that motivated his murder? Can Lily Robinson stop the killer before another climate scientist dies?With operative and lover JP Marchand at her side, Lily uncovers a cunning plot that endangers world order, and changes the trajectory of her life-forever.