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

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What do you think is the minimum age for becoming a Forensic Scientist? Since it’s not (mostly) a sworn position can someone under 21 become one? What about under 18?

Asked by Samuel over 4 years ago

That entirely depends on the requirements of the hiring agency. Since they’d probably require advanced schooling so hirees would wind up being older. It also might have to do with liability if the person would need to drive agency vehicles, etc.

Do witnesses often test positive for GSR residue on their hands? How close would they need to be when the firearm is discharged?

Asked by Cat twigg over 4 years ago

I couldn't tell you--I haven't personally done any studies of bystanders at a shooting. GSR analysis is usually testing for primer residue, which can escape from the gun when fired. So someone could have GSR on their hands if they handled a gun, if they touched a surface near to where a gun was fired, if they handled the gun after it was fired, etc. This is why, though they've stated this on television every day for fifty years, having gunshot residue on your hands doesn't prove you fired a gun. Not having gunshot residue on your hands doesn't prove you have not fired a gun. The particles are very tiny and easily dislodged. These are some of the reasons why most agencies don't do gunshot residue analysis any more. Hope that helps!

someone is alleged to have worn a t-shirt for over twelve hours on an 88 degrees day,dancing,drinking,and playing pool,but DNA testing revealed none of his DNA was found in said shirt.What are the odds of that,if not possible?

Asked by filomenasmith@yahoo.com over 4 years ago

That sounds odd, but were they looking for blood or semen stains in particular, or just the DNA of whoever wore it?

Hello Lisa, what is the dumbest case you ever worked?

Asked by Steven over 4 years ago

Nothing's really 'dumb' since every case involves, a minimum, property loss or inconvenience. Criminals can be dumb...the best example I can think of was when a bunch of boys broke the glass in a door to get into a jewelry store, couldn't find much to take, then were hightailing it out of there as the alarm rang and one was trying to climb back out the broken window and not having much luck when his buddy barreled through the other door simply by pushing the push bar on it. The video was hilarious.

Is that possible with in 25 day. I mean decay process.

Asked by Kalyan reddy almost 5 years ago

I’m not a pathologist, so I really wouldn’t know for sure, but I know decomposition can vary wildly depending on circumstances—whether the body is exposed or contained or wrapped; temperature and humidity are majorly important; and predators, insects, water, shade vs sun, all can affect matters. My best guess is yes, it’s possible.

What kinds of people do you both love and hate working with? Thanks

Asked by Liam over 4 years ago

Well, as in any job, I like working with people who are competent, responsible and pleasant, whether they're forensic techs, cops, attorneys, or victims. And I dislike working with the opposite qualities.

In a situation where fingerprints are planted on the weapon, and the person who committed the assault/murder is holding the weapon with gloves. How do the prints not become smudged or rubbed off?

Asked by Emily almost 4 years ago

I would think they’d have to get rubbed off. I don’t know how one could hold a knife tightly enough to stab someone without smudging all the prints on the grip. Guns, despite what you see on television, are terrible surfaces for prints, though I guess if you were very careful and maybe propped the butt on something, I suppose you could use it without grasping and smudging some areas, like the grip (if it were smooth, otherwise it likely wouldn’t retain any prints anyway) or a shiny, chromed barrel. A knife, maybe if it was big enough that you could grip only part of the handle and leave the prints on the other part undisturbed. Or maybe part of the blade if you didn’t stick it in the body all the way. But I would think it would be tough to do.

Hope that helps!