>> anytime i can bring a case to a positive conclusion and provide a service to one of my fellow citizens that i've done my job, i feel good. a serial killer was loose and investigator his no leads until an alert investigator saw something no one else had seen. a possible fingerprint on the victim's skin. the problem was how to collect it. texas city, texas is one of the largest oil refinery sites in america. the oil business is labor intensive which poses its own unique set of problems. >> we have a large population of contract workers that come in from out of state and all over the country and come in to work

at the refinery. it greatly impacts the community and the police department and traffic and crime and things like that. >> that are became all too clear on may 16th, 2001. just after dawn in the marsh land south of the city, municipal workers made a gruesome discovery. they found the bodies of two young women at the emg of a dirt road about 120 feet apart. >> the first girl we came upon was nude except for shoes and bound and bloody. the second was bloody, nude. >> the victim's clothing was scattered near the bodies. the conat the present times of the purses was restaurant about the scene. they estimated they had been dead for les than six hours, making the time of death sometime around midnight.

>> when you saw the first victim lying there, you could feel the anger that was carry out. at least i could. it was horrific. >> we were dealing with somebody who had zero regard for another human being. he was just mean and sorry was my first thought. >> the two women were 31-year-old dana fasil and kami kellerman. both worked as prostitutes. >> i believe my sister was a manic depressant and couldn't get the help she needed so she took towards drugs. she self-medicated herself. she got on the wrong drug and it took her.

>> dana's story was similar. she had a lifelong drug problem and had been arrested many times by local police. >> they were both beautiful young ladies and came from good families and had a lot going for them, but it was a tragedy. >> when we got there, we realized the remoteness of that area and the sage brush and the snakes and the coyotes and the insect. we couldn't check to see if there was another girl. >> they conducted an ariel search. fortunately there were no other victims. investigators looked at how the crimes were committed, hoping to find clues tote killer's identity. >> it was a disorganized crime scene. >> maybe at the time he got ought up in his actions. it was a sloppy scene for

somebody to leave so much behind. >> near the bodies, investigators found two white wash cloths. >> we're thought was there dna? did he put some other substance on it that would help him achieve his control of the girl? >> they found shattered glass on the ground and embedded in one of the victim's legs. >> she apparently kicked out the glass and shattered the window. >> there were beer cans in the area that looked new. >> we're picked up the beer cans hoping to get whatever you get off of them. >> investigators collected all of this evidence. not quite sure what if anything would help them find the killer. >> two young women were murdered

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doing at the time of their deaths, nobody deserves the way they died. not at all. >> a criminal profiler gave police a chilling warning. the person who committed these murders would strike again. >> he would under no uncertain terms, this individual is going to produce numerous bodies in this area if you don't stop them and stop them immediately. >> just before they were about to take the bodies to the city morgue, an investigator thought he saw something. there was a blood mere on kami's left thigh that looked like it had a fingerprint. >> every minute you wait it goes down. we know they are out there in the elementses and between that and thes are starting to sweat. you have animals and ants and anything that will start

anything deteriorating. >> for this was a fingerprint, lifting it would be difficult. skin is porous and strefs easily. two things that make it impossible to get a usable print. >> the odds of getting a bloody print on a body is very slim. >> the area around the fingerprint was treated with a chemical that reacts with the proteins in blood. the stain makes a print visible. as in this simulation with a print forming on skin, it enhanced the ridge detail of the fingerprint created in blood. >> any time you have a lot of blood, it will actually cover up your ridges so the less blood there is, the better print would be when you cross it with amino black. the very small places that had the tiny bit of blood, that's where i got the print.

>> there was a problem. investigators couldn't see the print clearly. they sent it to the fbi in washington, d.c. fbi image analyst scanned the image and examined it digitally on a computer. he immediately saw the problem. the texture of the skin on the victim's leg obscured the fingerprint. >> there were two patterns we are dealing with. you are dealing with the pattern of the fingerprint which is a specific type of pattern and then we have this texture of the skin that is distinct from the fingerprint. >> with the aid of the computer, he to first identify the victim's skin pattern and then have the computer remove as much of that as possible. >> it's a trial and error technique. it's not unlike an archaeologist using a dental tool to scrape away fine pieces and leave the

artifact intact as opposed to taking a pick ax and just singing for the fences. >> the computer helped identify the repeating patterns of the vehicle's skin. >> and i can show you how you can get rid of those wave lengths by sending all those bright spots to zero. >> was the print presumably of the killer? all they needed now was a suspect's print to compare it to. meanwhile, another print found at the scene, a tire impression had significant potential. it was clearly from the side wall of the tire. >> for those conditions to exist, the pressure of the tire hitting the side of the mud and the moisture and the type of soil, it was one in a million that came out as perfect as it did.

>> so perfect that technicians could read the brand of the tire. >> we saw the commander logo on there. it was in perfect condition and we saw it. >> casts were made of the print and when they were examined, the treads showed something unusual. >> we confruited that these were snow tires. if you have ever lived in part of sex as, we don't need snow tires. >> they worked to identify where the tires were sold. >> we were able to conclude they were sold in a particular area of colorado. >> my initial thoughts that they were -- how in the world will we find this person? it was a needle in a haystack. [ john sarrouf ] it's our mission at the family dinner project

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the murders of two prostitutes had texas believing they were dealing with a potential serial killer. >> he's a monster and we realized the magnitude of what we had. this was going to happen again if we couldn't solve it. >> they're spoke to other prostitutes in the area hoping one might help them. >> they a wealth of information about what goes on. if you can get a good rapport with one of the girls, you would

be surprised at the amount of information. they know everything that goes on. >> that's how they uncovered an important piece of information. another local prostitute said he was attacked three days before the murders. >> she had been taken out of the same area and she had been treated in much the same way as we suppose these other girls were treated other than the fact that she was not killed. >> she said the man tried to tie her hands behind her back with medical tape and gag her with a white rag. fortunately she escaped. >> by the grace of god she was able to get loose and freed herself enough. she had the will to survive that night. she had the will. she was able to walk the longly scary wall to the highway.

>> she described her assailant as hispanic in his 30 wise a tattoo of a daggar on his right forearm and driving a white car. >> she gave us a partial license plate of c 41. three out of is pretty good to keep an eye out for and look for. >> incredibly, she kept the wash cloth he used to gag her. it was made by the same manufacturer as and had the same threat count as the wash cloth found at the murder scene. >> she did everything right. she was pretty street savvy and has been around and has been into situations i would expect were she depenned on her wits and nothing else to save her. >> authorities combed the area for a man and a car that fit the woman's description. a check of motor vehicle records indicated there were many white

cars with a c 41 on the license plate. >> we're picked up several males driving a small white car and we took dna samples and pictures of tires and we were investigating everything we could. >> three days later, second paul eddenburg was driving into work and passed a suspicious-looking car headed out of town. >> i happened to look to my right and there was a small cite 4-door car. this one caught my attention and i saw the first letters on the license plate as c 41. my heart stopped beating. >> edinburgh pulled the car over, the driver was 30-year-old jose castellon. an orderly at a local nursing home. >> i saw the forearm with the tattoo of a dagger on it. i was -- two or three seconds, i

was speechless, because what's going through my mind now is this is the guy that everybody's been talking about. interestingly, his stepfather was a texas police officer. his only previous brush with the law was a misdemeanor conviction for which he served no time in jail. when questioned, castellon denied any involvement in the murders. employment and motor vehicle records showed he recently moved to texas from colorado and bought a set of commander brand snow tires when he was there. these were similar to the impressions found at the crime scene. >> we saw a lot of uniformity between the tire impressions of the defendant's vehicle to the actual casts that we had taken from the crime scene. as far as tread design, tread size, the logo itself.

>> investigators noticed the back window of castellon's car was broken. pieces of that window were compared to the glass found on the leg of one of the murder victims. the refractive index, a measure of the speed of light as it passes through the glass, was identical in both samples. finally, investigators compared castellon's fingerprints to the bloody print found on one victim's leg. it matched the middle finger on his right hand. >> it was a huge moment. it was the definitive moment in that we've got a very, very good case and let's get it to trial. we've got the right man, without a doubt. reet noise ] ♪

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two days after the murder of dana fasel and cammy kellerman, jose castillon was arrested and charged with two counts of murder. but prosecutors wanted to know why. police assumed alcohol was involved, so they analyzed the beer cans found at the crime scene. >> through the code on the beer cans, contacted the manufacturer to find out where those beer cans would have been -- what lot would they have been sold in,

where was that lot sold? they tracked it down to the store. >> that store's computerized sales system indicated a man bought the beer on the same night as the murders. >> they examined the receipts and found that this particular batch of beer was sold at this particular time. and sure enough, he had written a check for beer. >> the check was written for $19.68 by jose castillon. and what about the white washcloths? castillon worked at a nursing home that used hundreds of white washcloths every day. >> they took us back into their laundry area. and we dug through and found washcloths from the same manufacturer, same description, same thread count. so we knew we had a link. >> prosecutors believed castillon probably picked up both victims at the same time.

he was drinking, and carelessly discarded the beer cans. the barcode proved that castillon bought them. apparently, castillon bound the women with tape and gagged them with washcloths he stole from work. one of the girls kicked the rear windshield and broke it. a shard of glass stuck to her leg. after the murders, when he dragged the women into the grass, he left a bloody fingerprint on cami kellerman's thigh. when he drove away, he left his tire impressions in the soft mud. >> i can't even begin to imagine. i really don't want to imagine. they probably went out and decided they were going to get high and party a little bit. she just got in the wrong car.

>> i think they were friends, and at one point, they were picked up together. and one saw the horror of the other one dying. >> evidence technicians working fast and in difficult conditions performed a minor miracle by retrieving a print from the victim's skin. later, computer technology enhanced the print and proved jose castillon was the killer. the tire impression, too, was an almost perfect specimen. >> i think that if you tried 1,000 times to duplicate that tire impression, you could never do it. the circumstances had to be exact. >> facing a certain death sentence, castillon agreed to plead guilty to capital murder and kidnapping and was sentenced to life in prison without parole. >> it was overwhelming. how many people do you think walk in and want to plead to two consecutive life sentences if they thought they had a chance?

>> the nature of the crime indicates he was a serial killer in the making. but the decision to process the crime scene quickly and the technology that helped identify the print provided all the evidence needed to keep him from claiming even more victims. >> i think the fingerprint with the new science and with people willing to experiment to get the science where it's accepted in court was phenomenal. >> that's one of the great things about this technology is that in this case, it made a piece of evidence that was effectively useless a critical component in the prosecution of this case. >> if you've got a fingerprint is accepted in every court in the land as being conclusive. and if you've got the body of a female out here and has an individual's fingerprint on her

body in blood, i mean, what's that telling you except he was there, he has handled that body some time after there was blood on it. >> two young women were brutally murdered on halloween, but the killer left behind his dna. finding him was another thing. it was close to midnight on halloween in napa, california. trick or treat had been over for hours. and 26 year old lauren went to bed around 11:00.