Thomas Craven (Mel Gibson) is a veteran homicide 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 assume 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 cover ups, government collusion and murder--and to CIA operative Darius Jedburgh (Ray Winstone) who has been sent to clean up the evidence. Craven's solitary search for answers and his daughter's death transforms into an odyssey of emotional discovery and redemption.