A man goes overboard on a romantic sunrise cruise with his wife on Lake Coeur d'Alene in Idaho. Investigators begin to think his death may not have been an accident. Insiders close to Lori Isenberg are speaking out for the first time on television after she was convicted earlier this year of murdering her husband Larry Isenberg. The case gained national attention after Isenberg claimed Larry had died in a boat accident. Keith Morrison reports.

After a 27-year-old woman (Egypt Covington) is found murdered in her Michigan home, investigators quickly identify a person of interest, but years pass without an arrest. Andrea Canning reports.