() A surprise guilty plea prevented the public from learning more about what happened on Nov. 13, 2022, when criminology Ph.D. student Bryan Kohberger killed four University of Idaho students in their off-campus home.

But the parents of two of the victims, Madison Mogen and Ethan Chapin, are sharing their children’s stories in their first-ever televised interviews, revealing new details in the documentary, “One Night in Idaho: The College Murders.”

The four-part series premiered in full Friday on Amazon Prime Video, a subscription-based streaming service.

“In the middle of the night on November 13th, 2022, four University students were brutally murdered in an off-campus house in the quiet college town of Moscow, Idaho,” the docuseries’ online description reads. “With exclusive and intimate access to figures closest to the victims, One Night in Idaho: The College Murders explores the emotional twists and turns of this American tragedy and its continued fallout.”

The docuseries was released nine days after Kohberger’s unexpected plea deal on July 2, leaving the victims’ families and the public with unanswered questions.

“The question everybody wants answered is why? Why these four kids?” one of the parents asks in the docuseries’ trailer.

Kohberger’s signed confession did not include a motive.

Kohberger fatally stabbed Kaylee Goncalves, 21; Madison Mogen, 21; Xana Kernodle, 20; and Ethan Chapin, 20. He faces four consecutive life sentences and will be sentenced July 23.