Ethan Chapin’s sister, Mazie, revealed the final message sent by her brother, a freshman at the University of Idaho, shortly before he was tragically killed on November 13, 2022, in a residence close to the campus.

Bryan Kohberger, 30, recently took a plea bargain and admitted to the murders of Madison Mogen, 21, Kaylee Goncalves, 21, Xana Kernodle, 20, and Ethan Chapin, 20, during a home invasion at 4 a.m. nearly two-and-a-half years ago.

On the night prior to these events, Mazie Chapin, Ethan’s triplet sister along with Hunter Chapin, had her sorority formal on Saturday evening. Because she lacked a date and Ethan’s friends would be attending, she extended an invitation to him, as discussed in a new Amazon Prime documentary series titled, “One Night in Idaho: The College Murders.”

“I don’t usually invite anyone to formals, but some of Ethan’s friends were going, and he wasn’t going,” Maizie says in the docuseries. “So, I was like, ‘OK, you can just be my date.’ It was super fun.”

In this photo provided by Stacy Chapin, triplets Maizie, left, Ethan, second from left, and Hunter, right, pose with their parents Stacy and Jim Chapin at Priest Lake in northern Idaho in July 2022. Ethan Chapin was one of four University of Idaho students found stabbed to death in a home near the Moscow, Idaho campus on Sunday, Nov. 13, 2022. Police are still searching for a suspect in the case. (Stacy Chapin via AP)

Kohbeger is expected to receive four consecutive terms of life in prison without parole, plus another 10 years.

As part of the deal, he waived his right to appeal and the right to move for a future sentence reduction.

Kohberger’s trial would have begun in August.