A prosecutor in the Bryan Kohberger case shared his theory on why Dylan Mortensen survived the attack that left four college students dead.

An Idaho prosecutor is now sharing the answer to the question so many have wondered: Why did Bryan Kohberger let Dylan Mortensen live?

A University of Idaho roommate who survived Bryan Kohberger’s vicious massacre faced the killer for the first time since she saw him and his “bushy eyebrows” the night of the killing — and described him as an “evil” and empty coward during emotional impact statements.