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KN, p. 141 “What does a CSI tech really do?”

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TV makes the job of a CSI tech look like a lot of fun.

It looks like an easy job, too. Get a call from dispatch, arrive at a crime scene, pop on the gloves, shine a flashlight around, take a few photos, collect the evidence along with your team of 4-5 colleagues and go back to the lab an hour or so later, ready to process all of it.

Have the real CSI techs and law enforcement professionals stopped laughing yet?  😉

Here’s the reality:

Most small towns (under 50,000 people) have no CSI lab. None. The local police in smaller towns are able to collect fingerprints, but most have to send them off to a State Lab to be processed.

Many towns, even with a population of 100,000 people, don’t have a ballistics lab to check the caliber of any bullets/casings left behind at the scene or found in the victim’s body.

North Carolina (as of 2022) had a population of 10.7 million, and has three State crime labs – one full service and two regional labs.

New York State (as of 2022) had a population of 19.68 million, and has four State crime labs – one full service and three specializing in varied areas.

New Jersey (as of 2022) had a population of 9.26 million.  It has seven  State labs.

Texas (as of 2022) had a population of 30.03 million, with a full service forensic lab in Austin and 14 regional labs, some conducting only drug testing, and others close to full service.

And all of those crime labs are processing evidence from all kinds of crimes (burglary, robbery, rape, arson, cold case, assault, etc.) not just murders. It take a few hours to get the prints, preserve the evidence, bag and tag it for transport, but it takes months to get it processed, because there is a long line of cases ahead of yours. In some States, the wait is as long as 18 months. That is not a typo, folks. Eighteen months to wait until the evidence can be processed. Even if the case is a high profile one, moving to the head of the line might only shorten the wait to 2-3 months, because there are other high profile cases in line as well or cases that are already in court, waiting for clarification of the evidence.

 

There is no such thing as instantaneous fingerprint matches. See the article about fingerprint analysis here. There are now handheld machines that scan a viable fingerprint at the scene, but that only speeds up the collection process, not the identification of the fingerprint. (I was recently told that a new fingerprint reader can return an answer in 45 seconds, but some fingerprint experts are reserving judgment as to the accuracy of the matches.)

Get the picture? The State Bureaus of Investigation are short-staffed and the cases more numerous, as attorneys seek to prove or disprove beyond the shadow of a doubt that the evidence gathered at the scene linked their clients to the crime.

In general, the analysts examine all types of evidence related to criminal investigations and assist the criminal justice system. They can provide:

  • Consultation on the value, use, collection, and preservation of evidence,
  • Analysis and comparison of evidence from crime scenes and/or people,
  • Expert testimony in court proceedings, and
  • Assistance for collecting evidence and processing crime scenes,
  • Forensic science information to law enforcement agencies and district attorneys.

ALL of that evidence must be collected in a thorough and efficient manner by the Crime Scene Technician or Crime Scene Investigator. Cases are won and lost on how the evidence is handled – both the chain of custody and the collecting of the correct evidence can be factors in how a suspect is perceived.

I had a chance to chat with a CSI who has been in the field for about 10 years. She generously shared information about her day – soooo different from the image of the CSI jobs projected on TV.

She enters a crime scene after a Patrol Officer has cleared the house (made sure that no unauthorized person is in it). A Deputy might walk her through the house, and depending on the crime, the owner of the house then walks her through, pointing out items that might have been disturbed or areas where items are missing. She takes notes during the tours so that she can come up with a Plan of Action – how to process the scene.

In general, she will take photos first, and then collect the evidence. If a homicide is suspected, she might take video as well as still photographs.

She might see patterns of wreckage, or concentration of destruction, or even similarities with other cases, but it is not her job to focus on the M.O. (modus operandi) or narrow her collection efforts based on a hunch. She is there to collect all the evidence.

She might be looking for:

  • Fingerprints
  • Blood spatters
  • Fibers
  • Footwear impressions
  • Tire impressions
  • Tool impressions
  • DNA samples (hair, nails, blood, saliva, etc)
  • Murder weapon
  • Point of entry
  • Kinds of items taken

What a CSI leaves at the scene is sometimes as important as what he/she collects, so it is vital to be thorough. The detectives and attorneys decide what is significant to the case.

The trunk of a CSIs car is filled with the tools of the trade. They have kits for each type of evidence collection and if they know in general what the scene will call for, they may grab an additional kit from headquarters. They might even carry a tarp to cover the ground (creating a collection place for the evidence) if the scene is outdoors – such as a train wreck.

The CSI I interviewed works in Major Crimes for the Sheriff’s Department, and when she is called to a scene, she works 12-hour shifts, by herself. In most cases, she collects all the evidence, bags and tags it appropriately, and hands it all to the detective in charge. She works 14 days a month, equally divided between the day shift and the night shift.  On occasion, a 12-hour shift is not long enough to collect everything at a particular crime scene, so she stays a bit longer to finish. If it looks as if she has to work for another shift, a Patrol Officer will guard the scene until she returns to finish collection on her next shift. If the case merits 24-hour collection (because of weather or the condition of the scene/body) the CSI on the next shift will continue the collection, with any evidence collected up to that point handed over to the new person.

Clear chain of possession of the evidence dictates that in a case where collection goes on for more than one shift, limited people will have keys to the building. There are evidence cards showing who collected it, and anyone entering or leaving the scene will have to sign in and out with the Patrol Officer on duty.

For information about Footwear Evidence, click here.

Next week: The life of a CSI – rewards and challenges.

*Photos taken by Patti Phillips

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KN, p. 258 “Foxglove: Pretty, Medicinal, and Deadly”

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In general, an investigation into a suspicious death must show that the suspect had motive, means, and opportunity in order for a D.A. to pursue and prosecute a case.

A traditional mystery (not much blood and gore, with an emphasis on the howdunit, whodunit, and why) might focus on the little old lady who seems that she would never harm a soul. In fact, she may be the dastardly evildoer in a cleverly plotted story.

A detective must discover why the victim needed killing – the motive. Was the crime committed to cover up another crime? Was the mild-mannered little old lady, barely making ends meet through a glitch in her pension system, cashing social security checks that belonged to a long dead spouse now buried in the garden? Did the victim uncover the truth and need to be silenced before spilling the beans? Readers and jury members alike might relate to her desperate plight as a motive that pushes people over the edge.   

The detective must show that the suspect had the means to pull it off.

What would a little old lady do? The victim had no outward signs of blunt force trauma from being struck by a baseball bat or golf club. The answer lies in the multi-colored display of foxglove, readily available in our senior citizen’s garden. Every part of the foxglove plant can cause allergic reactions and a few fresh leaves are enough to kill a person. Collecting the foliage can irritate the skin and eyes, so wearing gardening gloves, eyeglasses, and a mask (commonly worn in pollen season) would have protected her when working with her weapon of death.

A detective must figure out if the suspect had an opportunity to deliver the poison to the victim. The foxglove leaves look very much like large baby romaine, if a bit fuzzier. But lathered in salad dressing at a neighborly gathering, nobody would be able to tell the difference.

Or, the senior citizen could bake up a special plate of brownies and share them.

From J.K. Rowling’s Harry Potter to Agatha Christie, foxglove has been a popular way to ‘off’ annoying people in fiction. Snape uses foxglove to make a potion in Potions 101 and Christie mixed it with other, edible greens in the garden in “The Herb of Death.”

My wife, Sheila, picked up six plants in three different colors at the garden center. I warned her about washing her gloves after handling the plants. All protocols were followed and no brownies have been made recently at our house.

 

So, why do we allow foxglove to be grown if it can be deadly?

The botanical name for foxglove is Digitalis purpurea. “Digitalis” is heart medicine made from foxglove. With a controlled dosage, digitalis is valuable in treating heart failure, but the wrong amount of foxglove can cause irregular heart function and death. Long-term use of foxglove can lead to symptoms of toxicity, including visual halos, yellow-green vision, and stomach upset.

The good news is that measuring digoxin (a form of digitalis) concentrations in the blood can help detect foxglove poisoning. If the detective and the other investigators are savvy about plants and gardens and the neighborhood dynamic, asking the right questions will uncover the reason and method of the deed. Case closed.

*Please note: This post is for entertainment purposes only.

 

 

 

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KN, p. 216 “Crime Scene at the Beach”

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A recent vacation week took us to the beach and we were lucky enough to rent a cottage right on the ocean. What a pleasure to wake up to seagulls calling to each other as they found breakfast on the incoming surf at the edge of the broad expanse of sand. Morning coffee was extra special as we breathed in the sea air and planned the day ahead.

Aside from all the great sunsets, fabulous seafood restaurants, and much-needed relaxation, we found time to chat about fictional bodies and where to find them.

TV shows and movies feature their share of corpses that have washed up on the rocks lining the shores of lakes, bays, or oceans. Any crime scene at water’s edge has its own challenges for the CSI techs processing the area for evidence, and our vacation spot highlighted a few.

Consider footprints on the sand:

 

 

 

 

This print had been fully visible until a wave washed it partially into oblivion.

 


Sneaker treads next to the barefoot print, showed the traffic on the dry part of the beach just a few feet closer to the dune.

 

 

 

There was more than one kind of sneaker tread to be seen.

 

The sneaker and shoe companies have data bases going back several years indicating the treads and styles of the various shoes they have manufactured. A search warrant or a friendly conversation with the people at the companies will reveal specialty editions of their footwear and the year they were produced. Matching the footwear to the prints on the beach can narrow the suspect list – helpful if the culprit remained in the area and the sneaker was an unusual brand.

 

Consider the tire tracks:

 

 

A windy afternoon caused this tire tread to lose its definition.

 

 

 

 

 

 

This new tire tread was just ten feet away from the footprints.

 

 

 

 

 

 

 

 

Beach bikes were in use as well. I didn’t have a ruler with me, so Sheila donated her sandal. This gives you some perspective of the width of the tread, essential in determining the type of vehicles near the ‘scene of the crime.’

Tire companies have data bases as well, and make their information available to law enforcement officers when needed. CSI techs take photos of the various treads for later ID and if needed, make casts of the footwear prints. Read “Is that your footprint?” here.

All three vehicle treads were within 20 feet of each other, along with all the footwear prints seen here – and it wasn’t high season yet, when a greater variety of cars, dune buggies, bikes, and shoes would be around.

Any crime scene in such a well-traveled place means it will be tough to find the killer. Nature washes or blows away the evidence and the crime scene is compromised by all the foot and vehicle traffic.  

Law enforcement officers have to hope for witnesses to the dastardly deed.

 

We turned our attention to the places to hide the body:

This lovely walkway leading from the cottage to the dunes gave access to an area that looked suitable for body stashing. Except that it wasn’t really all that great for anything covert. Three houses near ours had direct line of sight to that walkway, and all had overhead lights strung along their own paths to the beach.

Each of the other houses had three floors – ours was the smallest of the group.  That meant that anyone looking out at the ocean could also see anyone dragging a body out to the beach grass next to/under the boards.

 

 

 

 

 

But, let’s say that nobody is looking out the window. While it is illegal to dig up the beach grass in the dunes because of erosion programs in most oceanside communities, a killer would have no such concerns. BUT, that Beach Grass (actual name is American Beach Grass) is tough. It’s meant to be, so that it holds the sand in place during stormy weather. It would not be practical or at all speedy to dig a hole in a grass-covered dune in order to hide the body.

Maybe that’s why so many bodies in the TV movies are dumped elsewhere and merely wash up on the beach. Then the writers don’t have to worry about how to hide the body at the scene of the crime.

 

Photo credits: Patti Phillips at the North Carolina OBX.

 

 

 

 

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