A YOUNG WOMAN'S MYSTERIOUS DEATH AND AN EX-BOYFRIEND WHO SAYS HE CAN'T REMEMBER WHAT HAPPENED - IS IT MEMORY LOSS, OR JUST A LIE?

This Week's "48 Hours" Investigates "The Blackout Murder of Livye Lewis"

Saturday, Jan. 4 at 10:00 PM, ET/PT

On Oct. 31, 2020, in the small town of Hemphill, Texas, Darci Bass received devastating news: her daughter Livye Lewis had been shot in her car on the side of a road. Nearby, investigators found Lewis' ex-boyfriend Matthew Edgar bloodied and disoriented. From a hospital bed, Edgar insisted he had no recollection of what had happened. Captured in sheriff's office bodycam footage, he appears confused, saying, "I have no clue why I'm here."

In this all-new episode, 48 HOURS and correspondent Peter Van Sant unravel the case in "The Blackout Murder of Livye Lewis," to be broadcast on Saturday, Jan. 4 (10:00-11:00 PM ET/PT) on the CBS Television Network and streaming on Paramount+.

Sabine County Sheriff's investigator J.P. MacDonough believed Edgar was not telling the truth and arrested him as a murder suspect. However, others who know Edgar defend him. Edgar's friend Shaun Dunn believes he was a victim, not a killer. He thinks someone "close to Matthew" pulled the trigger.

In this gripping episode, 48 HOURS delves into the details of the investigation, and how authorities pieced together the events of that night.

Judy Tygard is the executive producer of 48 HOURS. Watch 48 HOURS on CBS News 24/7, CBSNews.com, Paramount+ and YouTube. The 48 HOURS free, advertiser-supported streaming (FAST) channel is available on Pluto TV, Paramount + and Paramount partner channels. Download the CBS News app on your phone or connected TV. Follow 48 HOURS on X, Facebook, TikTok, YouTube and Instagram. Listen to the 48 HOURS collection of original podcasts at CBS Audio.