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Category Archives: Crime Scene

Webinar: What Were They Thinking? The Planning of the Perfect Murder

Join me for a fun Webinar hosted by Sister in Crime-Atlanta on Tuesday, June 13, 2017 from 7:00 to 8:30 p.m. Eastern Time. You must be a member of that chapter to join is but if you’re already a SinC National member it’s only $20.

Here is the info on the event:

When your character plans and executes “The Perfect Murder,” he always, ALWAYS makes a mistake or two. These errors ultimately lead your sleuth to the solution. In this session, Dr. D.P. Lyle deconstructs the planning, execution, and post-crime behavior of two headline-grabbing murderers–O.J. Simpson and Scott Peterson—to help mystery writers and fans better understand fictional killers from social, psychological, forensics, investigative, and motivational points of view. Q & A follows a 1-hour presentation. Forensic questions welcome!

Webinar: https://www.meetup.com/Sisters-in-Crime-Atlanta-Chapter/events/239240813/

SinC-Atlanta: https://www.sincatlanta.com

 

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How Old Is That Fingerprint?

Fingerprint

Fingerprints are useful forensic science tools. They’ve been so for over 100 years. Mainly, it’s the pattern of the ridges on the fingertips that supply the useful information. We know that everyone has different fingerprints and we know that they do not change throughout the person’s life. This means that they are highly reliable sources for identification and for discrimination between two individuals. Law enforcement has employed this for years.

But several newer techniques and analyses allow investigators to go even deeper. The skin cells, that are part of a fingerprint, can often yield DNA. Chemicals in the print residue can sometimes reveal if the person has used or handled such substances as cocaine. Other analyses are underway that might make fingerprints even more useful.

One question that frequently plagues crime scene investigators is exactly when a print was laid down. This determination can make a huge difference. Let’s say that a print is discovered at a homicide scene and the primary suspect says that he had been at that location but that that had taken place a week earlier. Not on the day of the killing. Is he telling the truth? Or simply trying to throw the police off and make an excuse for the evidence they collected against him? It would be nice to know if the print was 24 hours old or seven days old.

Research is currently underway by Shin Muramoto and his colleagues and they reported their initial findings in a recent article in Analytical Chemistry. They discovered that a chemical found in fingerprints known as palmitic acid migrates away from the ridges at a predictable and consistent rate. By looking at this migration pattern they are able to determine whether the print is fresh or up to four days old. They are looking to extend this envelope to a longer period of time. But you can see, that even this level of discrimination could help—or not—- the suspect in the above scenario.

 

The World’s First Homicide?

No one knows for sure when the world’s first homicide took place – – other than Cain and Abel, that is. But it just might have happened 43,000 years ago in northern Spain. A skull retrieved from the Sima de los Huesos (Pit of Bones) in the Atapuerca Mountains showed two circular puncture wounds in the forehead of the skull. The skull had been found shattered into 52 fragments but miraculously was nearly complete. Once it had been reassembled the two wounds were easily identified. Researchers believe they were made by the same instrument and that they were not consistent with a simple fall into the cave shaft.

When you examine the skull it definitely looks as though some pointed instrument, most likely a stone tool or weapon, had delivered the blows. Of course, the assailant could claim self-defense, but this looks like a homicide.

 

Crime and Science Radio: Facial Recognition and Other Biometrics with FBI Senior Photographic Technologist Richard W. Vorder Bruegge

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BIO: Richard W. Vorder Bruegge is a Senior Photographic Technologist at the Federal Bureau of Investigation where he is responsible for overseeing science and technology developments in the imaging sciences.  He has an Sc.B. in Engineering, and an Sc.M. and Ph.D. in Geological Sciences from Brown University. He has been with the FBI since 1995, where he has performed forensic analysis of image and video evidence, testifying in state, federal and international courts as an expert witness over 60 times.  Dr. Vorder Bruegge was chair of the Scientific Working Group on Imaging Technology (SWGIT) from 2000 to 2006 and chair of the Facial Identification Scientific Working Group (FISWG) from 2009 to the present.  He is a fellow of the American Academy of Forensic Sciences (AAFS) in the Digital and Multimedia Sciences Section.  In 2010 he was named a Director of National Intelligence (DNI) Science and Technology Fellow for his work in facial recognition.  He is currently Chair of the Digital/Multimedia Scientific Area Committee in the Organization of Scientific Area Committees (OSAC).

LISTEN: http://www.blogtalkradio.com/suspensemagazine/2017/04/01/crime-and-science-radio-with-special-guest-richard-bruegge

Link will go live Saturday 4-1–17 at 10 a.m. Pacific

LINKS:

Biometric Center For Excellence (BCOE): https://www.fbi.gov/services/cjis/fingerprints-and-other-biometrics/biometric-center-of-excellence/modalities

Facial Identification Scientific Working Group (FISWG): https://www.fiswg.org

FBI Caught On Camera: https://www.youtube.com/watch?v=u5Oj2FDwLXs

 

Q&A with Expanded Audio Discussions Now on the Suspense Magazine Website

Q&A with Expanded Audio Discussions Now on the Suspense Magazine Website

Check out the new posts John Raab of Suspense Magazine and I put together. Read the Q&As and listen to the expanded discussions. Hope each proves helpful for your crime fiction.

Can DNA Be Used To Identify Multiple Assailants In a Three Decade Old Rape?

http://suspensemagazine.com/blog2/2016/12/20/d-p-lyles-forensic-file-episode-1/

In 1863, Could An Autopsy Accurately Determine the Cause of Death?

http://suspensemagazine.com/blog2/2017/01/09/in-1863-could-an-autopsy-accurately-determine-the-cause-of-death-d-p-lyle-answers-this/

Can My Female Character Cause Her Pregnancy To Become “Stone Baby” By Shear Will?

http://suspensemagazine.com/blog2/2016/12/31/can-my-female-character-cause-her-pregnancy-to-become-stone-baby-by-sheer-will/

More to come.

Want more cool questions from crime writers? Check out my three Q&A books.

M&M 200X300

More Info and List of Included Questions

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More Info and List of Included Questions

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More Info and List of Included Questions

 

The Black Dahlia: The Cold Case That Even 70 Years Later Won’t Go Away

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Elizabeth Short

The shocking and graphic murder of Elizabeth Short (The Black Dahlia) has never been solved and likely never will be. Seventy years ago yesterday, on January 15, 1947, the nude body of a young woman was found in a vacant lot on Norton Avenue in the Leimert Park area of Los Angeles. She had been bisected (cut in half) and her two body parts displayed in a spread eagle fashion.

The victim was identified as Elizabeth Short and she soon became known by the moniker The Black Dahlia. Her death has remained one of the truly iconic American crimes. It’s hard to believe that after 70 years little progress has been made in solving her murder.

During the initial investigation, the police were at a loss as to who could have and would have killed Elizabeth, and since then many theories about the killer’s identity have been postulated. But none have ever been proven. Still many are intriguing.

An excellent article from Crime Magazine by Stephen Karadjis was published in 2014. It summarizes the case, its investigation, and the various theories that have circulated about this murder.

 

 

Crime and Science Radio: Car Crashes and “Crime Hot Spots” — Studying Patterns To Prevent Crime

Join Jan Burke and me on Crime and Science Radio Saturday 1-7-17 as we welcome Greg Collins and Dr. Kevin M. Bryant to discuss Car Crashes and “Crime Hot Spots.”

Planning & Research Manager

Greg Collins

Greg Collins is the Research and Analysis Manager for the Shawnee, KS Police Department.  He is primarily responsible for CALEA accreditation, policy review and updating, grant management, overseeing the Crime Analysis function, and managing police department volunteers.

Greg joined the Shawnee Police Department as a sworn officer in 1991.  In addition to road patrol duties, Greg has worked as a D.A.R.E. officer, detective, patrol sergeant, training sergeant, and traffic safety unit supervisor.  Greg has also been a member of the department’s Special Tactics and Response team, and a field training officer. Greg transitioned to his current civilian position in June 2008.

Greg holds a B.A. in Management and Human Relations from MidAmerica Nazarene University and is an IACP Associate member.

Dr. Kevin M Bryant is a professor and chair of the Department of Sociology and Criminology at Benedictine College in Atchinson, Kansas. Bryant completed training and was certified in advanced crime mapping by the National Institute of Justice (NIJ) in 2011 and is currently working toward recertification.

LISTEN: http://www.blogtalkradio.com/suspensemagazine/2017/01/07/crime-and-science-radio-with-special-guests-greg-collins-and-dr-kevin-bryant

Link Goes Live Saturday March 4, 2017 at 10 a.m. Pacific

LINKS:

National Institute of Justice: http://www.nij.gov/Pages/welcome.aspx

Hot Spots Policing: https://www.crimesolutions.gov/PracticeDetails.aspx?ID=8

Data-Driven Approaches to Crime and Traffic Safety: https://www.crimesolutions.gov/ProgramDetails.aspx?ID=479&utm_source=Eblast-GovDelivery&utm_medium=Email&utm_term=LawEnforcement&utm_content=CSprog479-07112016&utm_campaign=CSreleases

Smart Policing Initiative: http://www.smartpolicinginitiative.com

Evidence Technology Magazine: http://www.evidencemagazine.com

 
 
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