On Friday, January 3, 2025, from 9:01 to 11:00 p.m. Est, 20/20 investigates the tragic death of Blaze Bernstein, a 19-year-old pre-med student from the University of Pennsylvania. Blaze’s disappearance during winter break led to a chilling discovery: a former high school classmate, Samuel Woodward, was responsible for his brutal murder.

ABC News Chief National Correspondent Matt Gutman reports on this shocking case, which has captivated the nation for years. When Blaze went missing, his family was frantic, but with the help of his sister, Beaue, they uncovered crucial Snapchat messages Blaze exchanged with Woodward before meeting him at a park. These messages became key evidence in the investigation, leading authorities to uncover the horrific truth.

Woodward, who had ties to an anti-gay, neo-Nazi group, lured Blaze—who was both gay and Jewish—into a deadly encounter and stabbed him over 20 times in an act of hate. Blaze’s body was...