CRITICAL TESTIMONY IN MURDAUGH TRIAL.

DAVID MUIR (ABC NEWS) We're going to turn now to the bombshell testimony in the trial of that once prominent South Carolina attorney, Alex Murdaugh, accused of murdering his own wife and son. The prosecution today playing video from Alex Murdaugh's son's phone, the son who was killed. The video taken just minutes before the murders and what the prosecution claims it shows about the timeline that Murdaugh had offered. Here's ABC's Eva Pilgrim tonight. [ABSTRACT FROM PUBLISHER]