(NewsNation) — A NewsNation special report breaks down everything we know about the investigation into the deaths of four University of Idaho students, nearly two months after they were fatally stabbed.

Hosted by senior national correspondent Brian Entin, the special dives into who suspect Bryan Kohberger is, how police tracked him down and the top takeaways from an 18-page probable cause affidavit.

Kohberger — a 28-year-old criminal justice graduate student — faces first-degree murder charges, accused of killing college students Kaylee Goncalves, Madison Mogen, Xana Kernodle and Ethan Chapin on Nov. 13 in an off-campus rental house.

Alivea Goncalves, sister of victim Kaylee Goncalves, shared her reaction to Kohberger’s arrest and affidavit details.

Then, retired FBI agent Bobby Chacon weighed in on the possible reason why Kohberger returned to the scene of the crime.

Watch the full hour-long special report in the player above.