CHICAGO -- Andrew Suh was only 19 when he executed his sister’s boyfriend nearly 30 years ago in Chicago’s Bucktown neighborhood, a sensational crime that launched an international search, sparked a media frenzy and brought lifelong grief to the victim’s family. Suh admits he pulled the trigger in the premeditated, ambush-style killing of a man who had helped raise him. But after about three decades in prison, the now-49-year-old Suh hopes his remorse and efforts to better himself have earned him a measure of mercy. Suh has said he killed the victim at the insistence of his sister, Catherine. ...