it appeared that he had as many as five affairs during the three-year marriage. >> police asked justin barber for permission to search his home and he was happy to comply. he also made his computer available. justin's computer went to chris hendry of florida's computer evidence recovery section. >> when i made a copy of justin's home computer hard drive the next thing i did was go through and look for anything that would have been deleted such as folders and files. >> one of the first things hendry noticed was that justin downloaded a song onto his computer just hours before his wife's death. >> the lyrics are violent. they're about killing somebody. >> it was a song by the group "guns and roses" with the lyrics i used to love her but i had to kill her. she drove me nuts and now i'm happier this way. >> it is kind of strange this is deleted hours before we actually got the machines. >> was this merely a coincidence? after all, it was only a song. >>> justin barber told police that a robber shot his wife, april, in the head and shot him four times while they were walking on the beach. he claim

and a time of celebration for april and justin barber. it was their third wedding anniversary.nd april was about to finish her training as a radiology technology. >> april had gone into the field of oncology, particularly why the radiology field.

developed it, analyzed it, and had it in its final form and compared it to the story, it revealed that justin barber was a liar. >>> a small texas community mourned the tragic death of an outstanding high school athlete and scholar. at first, there wasn't much hope that the killer would be apprehended, but tiny paint chips and bits of plastic provided evidence far more accurate than an eyewitness. san antonio is one of the fastest growing cities in texas, which in turn, required the construction of one of the most sophisticated systems of state highways in the country. unfortunately, increased traffic often means increased fatalities. and one of those tragic cases was that of a teenage boy found one morning near highway 281. >> no one deserves to die on the side of the road alone, even if their last breaths are those that are shared with a stranger. >> it looked to investigators like he had been hit head on by a motor vehicle. >> the abrasions to the person, the absence of socks on the feet, and appeared to have rolled down the roadway, which is all conducive to being hit by a motor vehicle. >> the

i cover a case in florida where justin barber shot his wife and shot himself i think five times. and miraculously survived. on his hard drive was a search for how to shoot yourself and survive. that is so specific to that crime, isn't that a case where it's just better evidence, in terms of it doesn't matter at this point who was searching, it's pretty clear there's a nexus there? >> internet searches are fascinating as evidence because they're a glimpse into the meanderings of our mind. if you think about everything you've searched for, does it really draw an accurate picture of who you are? it's easy to take -- of all the internet searches we do and men, all the internet searches, we search some pretty horrific things. if you looked at mine, it might be all murders and mayhem. it's a difficult thing. are they admissible as evidence? yes, if they're authenticated. what do they really tell us about intent? and certainly if you isolate one search, this sounds like a very speck one, the one you talked about, very specific, and i think very damning. but, again, you have to look at i

justin barber killed his wife and shot her and shot himself. ultimately, he did not prevail in that case. you can certainly find a good defense for it too. >> certainly part of the investigation. that part is clear. let's talk about the wife now because it doesn't seem like she's talking, but as we've learn again and again and we all know from law 101 that in itself shouldn't be incriminating. >> it's never incriminating for all of you innocent people watching this program right now, if you ever find yourself anywhere near an issue with the law, get a lawyer. even if you are innocent. it's the most protective thing we have in this society. sometimes i'm inconsistent. inconsistencies can trap in a case and make you look very guilty even when you are not. so the fact that they may lawyer up, it will never go to a jury. a jury will never find out that you got a lawyer. they are not allowed to find out you got a lawyer. it's your constitutional right. it's the smartest thing you can do even if you are innocent. >> by the way, that baby is gone, and