LEXINGTON, S.C. — Alex Murdaugh was back in court Monday on charges he killed his wife and son, appearing silently at a pretrial hearing that was mostly short on substance but long on spectacle as the true crime sensation continues to captivate. Murdaugh’s murder convictions and sentence of life in prison were overturned last month by the South Carolina Supreme Court. On Monday, a new judge laid out a timeline for hearings set the retrial to begin April 5. She also nailed down deadlines for