few drinks, and when he left, the detective snagged the dirty beer mugs and sent them out for dna testing. the results would take weeks -- leaving a town full of young people on edge. >> dads and moms were telling their college-age kids, "be alert everywhere you go." go with people when you go out. don't be alone." and that's a frightening-- order to give anybody. >> frightening but sound advice, because in this case, connecting the dots wouldn't be so easy. >> detectives have a possible suspect in their sights. jamie's boyfriend is invited to sit down for a polygraph test. >> failed the test. >> bad sign for you, right? >> bad sign for him. [music playing] (vo) from the beginning, wells fargo has supported community organizations like united way, non-profits like the american red cross, and our nation's veterans. we knew helping our communities was important then.