tell us that he did know what it was like to lose a child. he came out of retirement and took the job as head of the kauai police department after the sudden death of his 26-year-old son, erickson. >> i feel in a way that i'm working through him. that he motivates me. i believe that things happen for a reason. and in fact, i told larry this. i told him, there's a reason why we met. i don't know what the reasons are. but i'm here for you. >> so after meeting with larry, chief perry sent sandra's file to a couple of friends in honolulu -- investigators with the state attorney general's cold case unit. >> i asked them to see if they can find anything else that we may have missed. >> and they did indeed find something -- using what was breakthrough science for that time, early 2009 cold-case investigators extracted touch dna from sandra's shirt and bra. chief perry called larry with the news. >> and he said they got something.