One might assume that a key factor making this case ultimately so persuasive to the jury was the cell phone video that resulted in Murdaugh finally admitting in court that he had continuously lied about his stated whereabouts during the time frame of the murders, attempting to blame this on paranoia caused by his drug addiction.
@mrcompletely @lauren Yep. If a defendant isn't going for a "by reason of insanity" defense, the defense has two jobs regarding motive:
1. Convince the jury no reasonable person would do that
2. Convince the jury the defendant is a reasonable person.
... Lose them on 2, and you're really rolling some weighted dice on the outcome.