CNN Anderson Cooper 360 May 28, 2015 03:30:00
I've gone through so many of these where they have details and facts and nothing. >> reporter: soon the investigator calls back. >> he said hey, dave the guy passed this voice analysis test and i thought, oh my gosh. >> best time of our lives. >> reporter: now for the first time in nearly a decade, the dad who never gave up, dares to hope he may finally bring his daughter back home. >> martin savidge joins me now from aruba. what do we know about this witness? how credible is he? >> pretty a >>. >> reporter: pretty amazing story. and by the way, we're standing in front of the hotel where natal...