On Nov. 13, 2022, four University of Idaho students — Xana, Ethan, Kaylee and Maddie — were murdered in what law enforcement called a “true whodunit.” But a left-behind leather knife sheath would become the key to solving the case. Kevin Fixler and I break down the weeks-long investigation.

Consumed by four murders, Idaho police never stopped. Inside the search for KohbergerIn interviews and records obtained by the Idaho Statesman, police detailed the investigative work needed to see the case through to its end.www.idahostatesman.com