Is there a plausible scenario where Alex didn’t commit the murders against his son and wife?

Hey everyone, I’ve been rewatching some content about the Murdaugh cases and I can’t seem to answer the question I stated in the title. Alex has vehemently denied participating in the murders of his own son and wife, even though he’s admitted to plotting his own shooting, his financial crimes, etc. I am aware of the inconsistencies in his story the night of the double murders. But if we were to play devil’s advocate for a second, is there a plausible scenario where someone (or some people) entered the property and shot them dead?

I’m gonna make myself clear because some people in the comments seem to have made some assumptions: I have no interest in sowing doubt in his guilty verdict. I am trying to foster a conversation among people who are as interested in the case as I am, and who can put their personal feelings from this case aside to analyze this case further. A dismissive “no” or a patronizing “go look at the case files” answer does nothing to further this conversation.