Investigators are still searching for a suspect who murdered four Idaho college students, with new details emerging about the surviving roommates who were in the house. WATCH THE FULL EPISODE OF 'WORLD NEWS TONIGHT': https://bit.ly/3uHCDO5 WATCH OTHER FULL EPISODES OF WORLD NEWS TONIGHT: http://abc.go.com/shows/world-news-tonight WATCH WORLD NEWS TONIGHT ON HULU: https://bit.ly/3iQLwPp #abcnews #worldnewstonight #murder #murdermystery