So now can we assume he murdered these two people as well? The first was an openly gay friend of his son and there may have been something between the two young men. The second is the housekeeper. And what a scumbag: he and his partners tried to abscond with the housekeeper’s insurance money by hiding it from her sons.

From Wikipedia

Killing of Stephen Smith

In 2015, teenager Stephen Smith was found dead from blunt force trauma on a road in Hampton County and the case ruled a hit and run with no suspects arrested. Smith was openly gay and a high school classmate of Alex Murdaugh's oldest son, Buster. Witnesses interviewed as part of the original investigation repeatedly implicated Buster as having been involved in a relationship with Stephen, but the case had gone cold. According to The Greenville News, "rumors hinting at a cover-up and the possible involvement of one or more members of the Murdaugh family ... began circulating around the Hampton County area" soon after Smith's death and according to the Beaufort County Island Packet, the case "reeked of insider interference".

In June 2021, South Carolina Law Enforcement Division (SLED) re-opened the investigation into Smith's death based on evidence found while investigating the deaths of Alex Murdaugh's wife and son, which had also occurred in June 2021, in which Alex is charged for murder.[28] No charges or indictments have been issued in relation to Smith's killing as of February 2023. [29]

Death of Gloria Satterfield

On February 2, 2018, the Murdaughs' longtime housekeeper, Gloria Satterfield, suffered a severe head injury when she fell down the front steps at the family's Moselle estate and died on February 26, 2018, of complications including a stroke. It had been reported as a "trip and fall" accident, but no coroner was notified, no autopsy was performed, and the death certificate incongruously said it was by "natural causes." A coroner testified that describing her death on the death certificate as "natural" was improper. Satterfield's two sons were awarded an insurance settlement for the accidental and/or natural death, but by 2021, they had not received any money. According to multiple indictments, Alex Murdaugh, Chad Westendorf, and attorney Cory Fleming conspired to steal the Satterfields' $4.3-million insurance policy settlement. The scam worked by diverting the insurance payout to Alex's account, then not notifying the Satterfields that insurance settlement had occurred. It involved forgery, Murdaugh's law firm PMPED, and Palmetto State Bank. The Satterfield sons, represented by malpractice attorney Eric Bland, were ultimately able to recover more than $6.5 million during subsequent lawsuits.

On September 15, 2021, authorities announced they were opening a criminal investigation into Satterfield's 2018 death. In June 2022, authorities received permission to exhume Satterfield’s body in order to continue the investigation into her death.