Bryan Kohberger created a digital blackout during his brutal murders. FBI agent reveals how he turned it against the Idaho killer

EXCLUSIVE: Despite Bryan Kohberger leaving behind his DNA at the crime scene in 2022, the digital footprint of a man who slaughtered four University of Idaho students was severely lacking. Now, for the first time, an FBI agent talks about how the lack of evidence actually became key to making the case. Andrea Cavallier reports from Washington, D.C.