We'll Always Have Poison

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 kill...