With at least 10 persons of interest in the Llama Lady’s case, the case still remains open even today. The incident took place on May 5, 2007.

(NBC) — Friday's all-new two-hour "Dateline" episode explores the chilling 2007 murder of Anita Knutson, a beloved 18-year-old college student found stabbed to death in her off-campus apartment in ...