COLUMBIA, S.C. (AP) — Alex Murdaugh has admitted he is a thief, a liar, an insurance cheat, a drug addict and a bad lawyer. But even from behind bars he continues to adamantly deny he is a killer . Murdaugh’s lawyers will appear Wednesday before the South Carolina Supreme Court, asking the justices to overturn the two murder convictions and life sentence Murdaugh is serving for the shooting deaths of his wife, Maggie, and younger son, Paul, outside their home in June 2021. The defense argues