Guilty on all counts! South Carolina prosecutors proved, beyond and to the exclusion of every reasonable doubt, that Alex Murdaugh murdered his wife and son. It took the jurors less than three hours to convict him of firing two shotgun blasts into his 22-year-old son Paul and firing four to five rifle shots into his 52-year-old wife Maggie. He testified in own defense and attempted to persuade jurors that he had nothing to do with the abhorrent crimes. Jurors rejected his testimony. There are many lessons from this trial. Here are just three main ones.