it was very hard. >> it felt like we really wanted him to be there. >> gonzalo's brother carlos saw the pain. >> i see on their eyes. they get sad. it's really sad. >> carlos and his brother benito, were left with so many questions. >> we felt frustrated, because we could not find out what happened. why my brother was killed. and we did not know nothing. >> investigator, carefully reviewed the case file from the mid 1990s. >> what did you want to take a second? look at >> at that time dna, in the mid 90s was fairly new. but it was also advancing rapidly. so i just simply requested that the crime lab, re-examine the blood. >> the blood found in the transmission shop, the shop that the prime suspect, gianni van had access to. the original dna test said the