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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Greetings. I am writing a murder mystery in which the victim died from a blow to the head. The killer then loaded the body into the back of an SUV, where it lay for perhaps up to 6 hours. Then the killer dumped the body in a location where he was hoping to frame someone.

First question. Several hours after death, could there still be enough blood at the location of the head wound to leave blood evidence at the dump location? Would there be any way for the forensic experts to determine that that blood landed where it did several hours after its owner had died?

Another scenario. What if the killer, in the process of dumping the body, tried to make it look like the victim died in that location by bashing his head, in the vicinity of the wound, on the corner of a dumpster? What kind of evidence might such a maneuver leave?

I hope this question makes sense... Thank you. :)

Asked by CrankyBeach over 9 years ago

First question: My guess is (simply based on experience) is there would still be sticky blood at the head wound enough to smear on stuff, perhaps. It wouldn't be spurting or perhaps even dripping at that point because it should have begun to coagulate. Provided it didn't dry entirely, so the body would need to be in a place that's neither too dry nor too hot and certainly not both. Cool and humid would keep it from drying. The killer might bash the head but there could be a lack of blood spatter or flowing/pooling blood from the wound, since the blood won't be flowing as it would be if the person had still been alive. Also the problem with moving the body is lividity where the blood pools at the lower spots of the body due to gravity (like on the back if the person is lying supine. After several hours it should be fairly noticeable and then if you move the body, the lividity pattern doesn't quite match the position.

Hope that helps!

What type of education/training does this job need to be successful in this type of work? What type of education/training have you had?

Asked by Violet over 9 years ago

See above. I have a bachelor's degree in biology, plus over a thousand hours of continuing education in forensic topics (accumulated over 20 years).

Thanks again! So scattering hair over a crime scene would not cover the more commonly found searched for nuclear DNA? meaning the criminals in the movie (Charles town) arn't achieving much protection at all?

Asked by lisa fan over 9 years ago

It could help if it's pulled hair, not cut, and if they were super-careful to leave no fingerprints or any other kind of possible DNA samples so that the police had no choice but to test the hairs for possible suspect DNA. It would also depend on the scene--if it's a heavily traveled bank, for instance, so there is a ton of discarded hairs, the police would hardly test them all. If they leave a tuft of hair on say, a chain-link fence used to get away, where the police couldn't help but notice it, then they'd have a better chance of making it a useful diversion.

Been reading through these with great interest Lisa, I love forensic science! if criminals had time and the area was very small what is the best way for criminals to either erase or cover up there DNA? Thanks:)

Asked by tommy k over 9 years ago

They could try not to leave it in the first place--wear gloves and a hat, and don't cut yourself on the window you broke to gain entry. And wear a mask since you never know who has cameras where in this day and age!

Okay, so I'm interested in forensic science but..1.)I'm not that great at chemistry and I'm worried that'll get in the way and 2.) My parents aren't sure how much they'd make annually and if it's a secure job..I just don't know if it's a good choice.

Asked by Drxl about 9 years ago

How much chemistry you need depends on what type of work you do. As long as you're not actually working in toxicology or DNA, you shouldn't need to be a great chemist as long as you can reliably work with chemicals and combine them properly (like following a recipe). And as long as you are a reliable and honest employee then the job is secure, once you get it, but I will be honest--there's a lot of competition in this field right now so getting into a position might be difficult. You should definitely have a back-up plan.

How did you decide on this type of work?

Asked by Violet over 9 years ago

I loved mystery shows and books when I was a kid. I always wanted to be a detective, but didn't want to be a cop. And I always liked science.

What type of case do you have most often and when is your busiest time of year?

Asked by Emily about 9 years ago

Where I live we have many burglaries. There really isn't a busiest time of year, though things sometimes pick up when the kids are out of school. When I worked at the coroner's office I also swore there were more homicides in September and December.