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

Why do police still collect so much evidence even though they already have enough to prove beyond a reasonable doubt that someone did it. Like a clear video of someone doing it but they still need DNA, white seed, and a confession. I don’t understand

Asked by Jane over 5 years ago

Because trials don't occur, especially for a homicide, for another year or two or three after the crime, when there's no longer a chance to go back and collect other evidence. Confessions can be recanted, videos are never as clear as they look on TV, and everything will be challenged during a trial. And the evidence can be twisted. I had a guy who confessed to three different people the night of the crime, and then a year later went to trial and pled not guilty.

Can a coroner make a arrest? People like to always make the point about a “citizens arrest” but I’m sure you know what I’m talking about.

Asked by Richard over 5 years ago

I don’t really know, but at the coroner’s office I worked at I was told that our coroner was actually the highest law enforcement officer, technically, in the county. She was the only person who could arrest the sheriff if necessary. That never became necessary though so I don’t know how it would actually work.

If a attacker OC sprayed someone and robbed them is there chemical tests to see if the spray that was on the victims face and the Pepper spray on the suspect to see who did it

Asked by Question almost 5 years ago

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.

Also, is it possible to specifically detect that the DNA is from saliva and nothing else?

Asked by AJ about 5 years ago

I don't believe so, but I haven't done DNA analysis in 20 years so I'm not the best person to ask. I know there's an amylase test for saliva, but I don't know if it's used any more. And if you have a mixture I doubt it would be possible to tell what DNA is from what bodily fluid.

Since my finance passed away a month ago and there's been something eating at me now and I don't want anyone to think I'm going crazy. I found him on the floor but how can his legs bend perfectly and his knees
directly on top of each other perfectly

Asked by Shell over 5 years ago

I’m sorry for your loss. What was the cause of death?

What is something other scientists do as well as officers such as patrol and detectives that annoy you or even piss you plumb off

Asked by Johnathan almost 5 years ago

Usually I'm annoyed most often by people asking for things to be done immediately while ignoring a) that we are working on more cases than just theirs, b) that some processes take time, and/or c) that what their asking for isn't going to prove anything for them anyway.

As for fellow scientists, the worst offenses are a) finding typos in my reports and b) taking the last piece of cheesecake out of the communal fridge.

I hear there is a lot of politics in police work is this true and why?

Asked by Bobbi sue over 5 years ago

Before I worked in forensics, I was a personnel secretary, a hotel maid, and an ice cream counter server and a gas station 'full service specialist'. My husband is an elevator field engineer. There is 'politics' in every profession. Every. Single. One.

Best of luck!