The parents of two of the victims, Madison Mogen and Ethan Chapin, are sharing their stories in their first-ever interviews.

Plus, directors Liz Garbus and Matthew Galkin open up about their 'victim-forward' approach in this documentary.

Kohberger, who was a graduate student at Washington State University, near the University of Idaho, admitted responsibility for the murders of sorority girls Madison Mogen, 21, Kaylee Goncalves, 21, ...