“Edge of Darkness” is an emotionally charged thriller set at the intersection of politics and big business. Thomas Craven (Mel Gibson) is a veteran homicide detective for the Boston Police Department and a single father. When his only child, twenty-four year-old Emma (Bojana Novakovic), is murdered on the steps of his home, everyone assumes that he was the target. But he soon suspects otherwise, and embarks on a mission to find out about his daughter’s secret life and her killing. His investigation leads him into a dangerous, looking glass world of corporate..