set a course for change. >> we're back with the murder of faith hedgepeth.bludgeoned to death near the university of north carolina in chapel hill. for nine long years, investigators tried to figure out who could have been responsible. and then a routine traffic stop ended in the arrest of a surprising suspect. >> he still lives in my heart and in my mind all the time. >> faith hedgepeth father wondered if he'd lived to see the day police would arrest someone for his daughter's vicious death. it would take nine years. but finally, the case blew wide open. >> sometimes justice is swift. >> other times it takes longer. >> a lot longer. for almost a decade, police couldn't tie any evidence to the original persons of interest, including faith's roommate karina rosario, or her ex-boyfriend eric macoy jones. >> today, after nine years in a week, an arrest has been made in the murder of faith hedgepeth. >> cops arrest a man whose name had never been dropped in their case files. miguel enrique salguero olivares. >> when i cried. >> with tears of joy. tears of relief