Alex Murdaugh faces a steep uphill battle in his push for a new murder trial after a state judge on Tuesday limited witness-questioning and set a high burden of proof surrounding accusations that the court clerk tampered with the jury during last year’s sensational proceedings.

Even if Murdaugh’s lawyers prove that Colleton County Clerk of Court Becky Hill told jurors not to believe his testimony and pressured them into reaching a guilty verdict, they must also demonstrate that doing so prejudiced them against Murdaugh, former South Carolina Supreme Court Justice Jean Toal ruled.