LIsa Black
Cape Coral, FL
Female, 49
I spent the five happiest years of my life in a morgue. As a forensic scientist in the Cleveland coroner’s office I analyzed gunshot residue on hands and clothing, hairs, fibers, paint, glass, DNA, blood and many other forms of trace evidence, as well as crime scenes. Now I'm a certified latent print examiner and CSI for a police department in Florida. I also write a series of forensic suspense novels, turning the day job into fiction. My books have been translated into six languages.
That’s a good question that I’m afraid I can’t answer. I’m sure there is some way to determine the chemicals used in pepper spray. But this would be affected by a) how long does it remain on the skin before the skin absorbs it and b) most forensic chemistry labs are set up to detect illegal drugs in urine, blood or gastric contents. Identifying any kind of poison or other substance may require equipment or reference databases they don’t have.
Proving it’s the same batch of pepper spray may or may not be possible. I”m not personally involved in this kind of testing, but I can assure you it is not like television. We had a series of cases and wanted to determine the exact composition of drugs with percentages of fentanyl, heroin etc. Turned out while nearly every crime lab can determine if a drug is present, there were only one or two labs in the entire country we could find that could determine percentages, and they charged an arm and a leg.
Sorry I can’t be more help.
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My job isn't like TV--I'm not involved in every single aspect of the investigation. My job is to provide forensic support to the detectives, so in any given case I estimate I know perhaps 20% of the overall information relating to the crime. I don't know what witnesses, victims, suspects have said, what financial or phone records might show, etc. etc. The detectives would probably tell me if I asked, but I'm usually too busy with all the other cases to ask.
Who to arrest and who to prosecute is up to the detectives and the prosecutors. They don't ask my opinion, and in light of the first paragraph, I probably couldn't give them an informed one.
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What is your favorite part of this job?All the interesting, different, bizarre stories that make up the crimes that have happened that we have to investigate.
What is you least favorite part of the job?Being 'on call' and knowing you can be interrupted at any moment of the day and have to go to a crime scene, even if it's the middle of the night or a holiday. I've also had to change vacations because I have to testify in a trial. I hate that.
Being around the dead is something you either get used to really quickly or you don't. The dead will not bother you, but the living can drive you crazy! And stress depends where you work. I have a great office and a relatively low-crime area, so unless we have a lot all happen at once, which is not too often, it's really not that stressful. If I lived in a more hectic place with too many demands and not enough time or resources, it might be a different story.
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That would depend a great deal on the circumstances. Any hair actually on the victim that does not appear to belong to the victim would likely be collected. If there was obviously a struggle, if the victim was beaten or strangled, hairs on their hands or caught in their fingers would warrant special attention or any clumps of hair nearby. If the victim's lying on a carpet that apparently hasn't been vacuumed for the past decade, then single hairs might be disregarded. If the person is outside and shot from a distance, then hairs would likely be disregarded.
I hope that helps!
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I haven’t ever done an autopsy at all, since I’m not a pathologist. They can be done on animals, usually it’s called a necropsy and may be done by a veterinarian.
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I’m sorry but I have no idea. that would be the detective’s job, not mine.
Best of luck!
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