Among the serial killers Bryan Kohberger had an obsession with was Danny Rolling, who also murdered multiple college students with a KA-BAR knife after breaking into their homes through sliding glass

New details about convicted murderer Bryan Kohberger's phone activity in the days after brutally slaying four University of Idaho students have come to light.

Bryan Kohberger called his mother multiple times after killing four University of Idaho students, including when he returned to the crime scene, forensic analysis reveals