Alex Murdaugh isn’t wasting any time after getting his murder convictions blown up … because he’s now suing Becky Hill over claims she rigged the trial against him so she could cash in on the case with a book deal.

According to a new federal lawsuit obtained by TMZ, Murdaugh says Hill secretly worked jurors throughout his explosive 2023 double-murder trial … allegedly warning them not to be “fooled,” “confused,” or “convinced” by his defense team and pushing them toward a guilty verdict.

The filing comes just days after the South Carolina Supreme Court tossed Murdaugh’s convictions entirely … ruling Hill’s alleged jury tampering poisoned the trial process and denied him a fair trial.