A state appeals panel last week declined to overturn the conviction of a man who killed his parents for an inheritance he thought he would receive.Though the gun was never located and there was no confession, McHenry County jurors found Michael W. Romano guilty in October 2015 on two first-degree murder charges in the 2006 shooting deaths of his father, Nick Romano Sr., and stepmother, Gloria Romano, at their home near Crystal Lake.Michael Romano told police he found his parents dead in the early morning hours after he …