In finding a man guilty of concealing a homicide, a McHenry County judge reasonably inferred the defendant killed a woman in her home and covered up the body to give himself additional time to escape, an appellate panel ruled.Howard E. Dibbern was charged in 2014 with first-degree murder, concealing a homicide and possession of a stolen motor vehicle after he beat and stabbed 48-year-old Karen Scavelli, broke her neck and then hid her body under pillows and blankets, prosecutors argued.To get away, Dibbern stole Scavelli …