Forensic Scientist

Forensic Scientist

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.

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Last Answer on July 21, 2022

Best Rated

I want to be a forensic scientist, but I wanted to know do you need to carry a gun

Asked by Anna about 5 years ago

Some law enforcement agencies still require their forensic staff to be sworn police officers as well, but most have civilian staff for the forensic support. I have always been a civilian and therefore cannot carry a gun.

What is the point in giving a poly graph if it’s not even admissible in court except for in specific circumstances? (Usually if only the defense and prosecutors agree)

Asked by Zarah over 5 years ago

That's not something I have anything to do with--it's the detectives' and/or attorneys' decision. I supposed they think if they get results that are really surprising it can hint if they're looking at the right people or not.

Are there any famous cases in history that involved thin layer chromatography (TLC) that you are aware of? Or any interesting facts many would not know?

Asked by Mike over 4 years ago

I”m sorry but I”ve never used thin layer chromatography. If I had, it most likely would have been to distinguish extracted fiber dyes. As far as I know it’s the only way to determine if natural fibers likely had the same source.

I mean a sworn police officer sorry for not being specific

Asked by Terry almost 5 years ago

As far as the job is concerned, I would think the odds of getting the job would be the same, but there are other considerations. The pay and benefits are different (at least at my agency) between sworn and civilian because they’re different unions. A sworn officer would be taking less pay and benefits to be non-sworn so the hiring party might wonder why, or worry that they would get tired of it and want to leave.

How long does saliva DNA stay on an object? In other words, for how long the DNA is detectable?

Asked by Aj over 4 years ago

That depends entirely on the circumstances. If a sample of anything--blood, saliva, semen--is properly dried and kept in relatively dry conditions at a steady low temperature, or even frozen, it can last for decades. If the temperature and humidity vary greatly, then the sample could break down. If it's stored in plastic or airtight when wet it could rot and decompose.

Hi,

You recently advised that a simple black powder would reveal glove prints deposited by Nitrile gloves. Would Latent Silk Black Print Powder, manufactured by a company called Sirchie be a good choice?

Thank you.

Asked by Richard Gray about 5 years ago

Sure--any good quality black powder should have the same effect.

How often do homeless people intentionally try to get arrested? I heard they do this because the shelters won’t take them if they are on drugs among other things so they commit crimes in front of cops to have a place to sleep

Asked by How often do homeless people intentionally try to get arrested? I heard they do this because the shelters won’t take them if they are on drugs among other things so they commit crimes in front of cops to have a place to sleep over 4 years ago

I wouldn't be involved with cases like this so I don't know. In my experience with homeless camps the people are usually not too cooperative and don't want to leave, so I haven't seen this happen.