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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Writing a novel: How long could dead bodies go undetected in an air conditioned storage unit? Assuming the people who leased it paid in cash and were unattached to their location (so basically no one is looking for them).

Asked by WriterGal over 8 years ago

I'm sorry I can't give you any concrete timelines (a pathologist would know better than I) but I would think at least a couple of days. Air conditioning would definitely make the smell more tolerable than no air conditioning, but still storage units usually have just enough A/C to keep high heat and humidity from causing mold or causing problems with electronics. That's not the same thing as refrigeration. It might also depend on how close the bodies are to the door. People walking by might catch a whiff of something bad but assume that an errant mouse or cat somehow died inside. Thinking that, passers-by might be reluctant to open the door to someone else's property. The storage unit owners, even seeing it unlocked, might try to at least contact the client first, maybe calling the home and the guy's cell which of course he's not answering. Honestly you could probably make it anything you wanted--if you want it discovered quickly, put the unit at the front of the property or give it a fussy neighbor client who visits that same week. If you want it to be a long time, put it at the rear of the property where no other clients visited their units and all units lead to an outer door that didn't show any signs of damage (because both victims and husband entered with their assigned passkey) so the storage unit employees never had a reason to enter to notice either a smell or an unlocked unit. Good luck!

Hi. I am interested in becoming a Forensic Scientist and I am a senior in high school. I had a few questions and was wondering if I could get your phone number or email address to ask you those questions. Thanks

Asked by Rana over 9 years ago

I am so sorry I didn't get back to you earlier! I can be reached through my website at www.lisa-black.com.

Though if you look through previous questions and answers, you might find that someone has already asked what you would like to know.

Is it possible to find any semen or blood samples in an abusing crime scene after a while ? Certainly the scene is being cleaned by the janitors but even so with luminol or Christmas Tree Stain can any results of the criminal identity still be found ?

Asked by Mekos almost 9 years ago

Who knows? It all depends on where the samples were and how thoroughly the surface was cleaned. If blood was on a glass window and it was thoroughly cleaned, then all of it is probably gone for good. If it's a porous bare wood, then probably not...unless it was thoroughly soaked with a bleach solution. If it's a large area, even if it's cleaned there might still be some left in the nooks and crannies--like in a tile floor, the ceramic may be clean but the more porous grout between the tiles might hold a substance. So there is no way to say it's always possible or it's always not possible. PS Luminol helps you find blood. Christmas Tree stain is used to stain a dried semen sample on a glass slide. It doesn't help you find the semen in the first place.

what are two challenges that you have to overcome? how do you overcome those challenges?

Asked by Ayah almost 9 years ago

Having to testify in court, which is the most awful kind of public speaking ever because there are people there trying to make you look incompetent. You deal with it by practicing and preparing and training yourself not to take it personally. The other challenge is learning to communicate, in different ways with different groups. With victims and family/friends of victims, you have to be empathetic without talking to them about the investigation, because that's the detective's job. With co-workers, detectives and cops, you have to give them all the information they need or want without bruising their egos. This takes practice and focus.

What are the things we should be looking for in an abusment case,what are the good evidence of the crime scene ? Semen,blood ..?

Asked by Mekos almost 9 years ago

I don't know what you mean by 'abusement'. Like child abuse, or sexual abuse? Basically you look for whatever confirms or refutes the victims' story or your theory of the crime. First was the suspect at the right location at the right time for this crime to have occurred--you look at receipts, witness statements, GPS, anything that puts the relevant people in the right places. Then is there physical evidence of the alleged action occurring--bruises, blood, semen, a weapon found at the location. Then is that evidence tied to the suspect by DNA or other means?

If somone ejaculated in a girls or guys mouth they swallow can u find dna

Asked by jim about 9 years ago

Possibly, depending on the time elapsed.

why we use alleles frequence instead of single short tandem repeat when we want to match dna crime to suspect

Asked by atheer over 8 years ago

As far as I know--and I am not a DNA expert--multiplying the frequencies of each allele tested is what gives us the astronomically high numbers of elimination of people having that same set of alleles. A SET of data points eliminates many more people than a single data point, in other words.