Directors Liz Garbus and Matthew Galkin discuss their Prime Video docuseries about the murders of four University of Idaho students, how it affected their families and the recent twist in the case.

Nearly three years after four University of Idaho college students were stabbed to death in an off-campus house in Moscow, Idaho, in the early morning hours of Nov. 13, 2022, a 30-year-old former criminology student Bryan Kohberger confessed to the murders on July 2 and signed a plea deal that would save him from the death penalty.