For 10 years Bob and Sandy Anderson have struggled to find answers as to why their 19-year-old son Robbie died during a night of drinking with two friends. The medical examiner ruled it was an unexplained death. The two friends have offered conflicting accounts of what happened, and still won't answer the most basic questions. After a decade, the cold case is now an active investigation once again. Originally broadcast on December 1, 2019.