New details included a DNA-laden Q-tip, a spotless getaway car and a fateful Door Dash order that may have put one of the victims in Kohberger's path.

Now that the criminology student accused of killing four Idaho college students has instead pleaded guilty in a dramatic turn of events, he will almost certainly spend the rest of his days behind bars.

NBC News' Gadi Schwartz presents a timeline following how Bryan Kohberger went from criminology student to killer. Kohberger pleaded guilty at an Idaho court to homicide charges as well as one count of burglary after he stabbed four university students at their home near the Washington border.