Bryan Kohberger declined to share his reason behind the horrific killings of the Idaho Four at his Wednesday, July 23, sentencing hearing – but former FBI agent Jennifer Coffindaffer has a theory. Kohberger,

Kaylee Goncalves' sister delivers scathing statement to Bryan Kohberger as the Idaho murderer receives four consecutive life sentences without parole

Dateline has revisited one of Oregon's most haunting murder cases — the chilling 2016 homicide of 23 year old Kaylee Sawyer.

Kristi Goncalves, mother of Kaylee Goncalves, delivered a heart-wrenching victim impact statement at Bryan Kohberger's sentencing. With raw emotion, she spoke of the unimaginable grief caused by her daughter's brutal murder and the lasting impact it has had on her life.

Goncalves had also seen a strange man staring at her "up above their house to the south" when she took Murphy outside, according to CBS News. She was so concerned that she "told everyone" about the man too. Goncalves' parents told reporters she was found with 34 stab wounds, according to the I daho Statesman.

Bryan Kohberger will spend the rest of his life behind bars after pleading guilty to the brutal murders of Ethan Chapin, 20, Xana Kernodle, 20, Madison Mogen, 21, and Kaylee Goncalves, 21. In the wake of his sentencing hearing,