Four University of Idaho students are discovered dead on Nov.13, 2022. Inside the investigation that led to an arrest in the case.

After eight years as chief and nearly 29 years overall with the city police department, Fry retired from his post in May 2024. His decision came about a year and a half after the arrest of Bryan Kohberger, who stabbed the four college students to death for reasons detectives said they still don't know.

ABC News sat down with Idaho State Police Lt. Darren Gilbertson, the lead detective in the Idaho murders case, after Bryan Kohberger was put behind bars for life.