Oscilloscope Laboratories has unveiled theatrical trailer for We Need to Talk About Kevin (2011). The movie, based on Lionel Shriver's novel, tells the story of a smart, educated New York mother who does her best to raise a son she never wanted in the first place. He turns out to be extremely difficult and is at the center of the woman's marital breakdown before going on a killing spree at his high school with a crossbow. Watch theatrical trailer now!