Families of the University of Idaho murder victims spoke directly to their children's admitted killer Bryan Kohberger at his sentencing hearing.

Despite Kohberger's guilty plea in the Idaho murders, investigators still don't know his motive, who he targeted or where the murder weapon is after he covered his tracks.

In the days after murdering four University of Idaho students in an off-campus home, Bryan Kohberger’s behavior shifted dramatically and investigators would later find that he had fixated on news coverage of the killings and began paying for items in cash – often wearing gloves – as he avoided the area of the murders.

Kristi Goncalves stared down Bryan Kohberger, who violently murdered her 21-year-old daughter Kaylee, telling him at his sentencing, "May you continue to live your life in misery. You are officially the property of the state of Idaho.

A man will be sentenced for stabbing Madison Mogen, Xana Kernodle, Kaylee Goncalves and Ethan Chapin to death in a rental home near the University of Idaho.

Hundreds of pages of previously sealed documents were made public by the Moscow Police Department, but information is still redacted.

The convicted murderer appears gaunt and expressionless in the photo, taken as he begins to serve out multiple life sentences for the murders of four University of Idaho students: Xana Kernodle, 20; Ethan Chapin, 20; Madison Mogen, 21; and Kaylee Goncalves, 21.

Hundreds of court documents may soon be unsealed. Prosecutors, police and others connected to the case may continue speaking out about the murders.

"Happy Face Killer" Keith Jesperson believes Kohberger's awkwardness and high-profile murder case make him vulnerable, and he's recommending a transfer to Oregon.