Bryan Kohberger’s lawyers are trying to save his life but pinning the grisly slayings of four University of Idaho students in 2022 on someone else, a judge revealed Thursday. Kohberger’s attorneys have already informed the judge that they believe someone else is responsible for the pre-dawn stabbings at a student house in Moscow,

The video obtained by "Dateline" is among the evidence that investigators believe trace his movements around the time four University of Idaho students were killed.

Prosecutors have said they will seek the death penalty for the quadruple murders. Death by a firing squad is an option in Idaho.