Xana Kernodle is very likely the reason Bryan Kohberger left behind his knife sheath and why there was an eyewitness to the crime.

Bryan Kohberger brutally "disfigured" Kaylee Goncalves' face and fought through a violent struggle with Xana Kernodle before fleeing the scene of the University of Idaho murders ... according to newly unsealed police reports.

After Bryan Kohberger was sentenced for the Idaho murders of Ethan Chapin, Madison Mogen, Xana Kernodle and Kaylee Goncalves, the latter’s sister detailed his true demeanor in court.