COLUMBIA, S.C.—A longtime friend of South Carolina attorney Alex Murdaugh now faces 18 charges involving the theft of more than $3 million in insurance money from the family of Murdaugh’s dead housekeeper, according to newly unsealed court documents. An indictment made public Wednesday accuses Cory Fleming of working with Murdaugh to defraud the sons of Gloria Satterfield, who died following a fall at the Murdaugh home in 2018, by suing Murdaugh on behalf of the sons but diverting the resulting insurance payouts to Murdaugh and himself. Fleming also wrote himself checks from Satterfield’s estate to pay for his own mortgage, credit card debt, tax payments, video games, and other purchases, prosecutors said. The sons said in a lawsuit that they never got any of the money. They said Murdaugh convinced them at their mother’s funeral to use Fleming as their attorney and sue him for wrongful death, without disclosing that …