Investigating Crime Scenes

Edmond Locard and his Principle of Exchange

Dr. Edmond Locard was the director of the world's first forensic lab in Lyon, France. In this capacity, her came up with what we now call Locard's Principle of Exchange. The idea is that whenever a person/place/thing comes in contact with another person/place/thing, there is some exchange of trace evidence. He also noted that the intensity and duration of the contact, and nature of the materials determine the extent of the transfer. For example, if you bump into someone on the sidewalk, there will be less exchange than if you spent four hours in their home.

Lessons from the JonBenet Ramsey Case

JonBenet Ramsey
The 1996 homicide (murder) investigation of six-year-old JonBenet Ramsey provides valuable lessons in proper crime scene investigation procedures. From this case, we learn how important it is to secure a crime scene. Key forensics evidence can be lost forever without a secure crime scene.

In the Ramsey case, the police in Boulder, Colorado, allowed extensive contamination of the crime scene. Police first thought JonBenet had been kidnapped because of a ransom note found by her mother. For this reason, the police did not search the house until seven hours after the family called 911. The first-responding officer was investigating the report of the kidnapping. The officer did not think to open the basement door, and so did not discover the murdered body of the girl.

Believing the crime was a kidnapping, the police blocked off JonBenet's bedroom with yellow and black crime scene tape to preserve evidence her kidnapper may have left behind. They didn't, however, seal off the rest of the house, which was also part of the crime scene. Then the victim's father, John Ramsey, discovered his daughter's body in the basement of the home. He covered her body with a blanket and carried her to the living room. In doing so, he contaminated the crime scene and may have disturbed evidence. That evidence might have identified the killer.

Once the body was found, family, friends, and police officers remained close by. The Ramseys and visitors were allowed to move freely around the house. One friend even helped clean the kitchen, wiping down the counters with a spray cleaner—possibly wiping away evidence. Many hours passed before police blocked off the basement room. A pathologist did not examine the body until more than 19 hours after the crime took place.

Ransom Note
To this day, JonBenet Ramsey's murder remains unsolved.

Your Task

Tell me about mistakes made in the handling of the crime scene in the JonBenet Ramsey case.

IN AT LEAST 1 FULL PARGRAPH of 4-6 sentences (don't number the questions!), answer the following:

What did investigators do wrong in the JonBenet Ramsey case? Consider the 7 Ss of Crime Scene Investigation. Were they all done?
Thinking in terms of Locard's Principle of Exchange (this means you have to talk about Locard's Principle of exchange), how did investigators' action (or lack thereof) influence what trace evidence was available to investigators?

Someone please help me

Answer:

point

Explanation:

A plaintiff filed a negligence action against two defendants in federal district court, invoking the court's diversity of citizenship jurisdiction. Prior to serving their answers, the defendants filed a motion to dismiss for lack of subject matter jurisdiction. The court denied the motion, concluding that subject matter jurisdiction was proper. The defendants then filed their answers responding to the merits of the complaint and denying negligence. The defendants' answers also contained motions to dismiss the action for lack of personal jurisdiction. Five weeks later, the defendants filed a motion to dismiss the action for improper venue. If the court determines that venue in fact is improper, how should the court rule on the defendants' venue motion

What states can I legally own a pet bat?

Which of the following is not one of the support disciplines generally provided individuals incarcerated in a correctional facility?

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Are the drugs from the passenger seat of the car the result of a legal search? Why or why not?
What about the drugs from the trunk of that same car? Support you answer.

Why is the medical examiners autopsy completed within 24 to 48 hours of a homicide?

Distracted drivers surround you on the road. _____ of drivers talk on cell phones.

In what types of situation should police officers be allowed to not enforce the law

Which of the following is NOT considered circumstantial evidence?

O fibers
O eye witness reports
O tool marks
O soil
O DNA

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Si usted empieza a sentir sueño cuando esta conduciendo usted debería A. Acelere para llegar a su destino lo mas pronto posible B. Pare y deténgase al lado de la carretera C. Parar en un parada de descanso (rest stop)

Cuál es la diferencia entre capacidad y derecho

What percent of people with a serious mental illness commit violent acts?
89%
42%
65%
5%

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An inmate may be put in segregated housing for having a certain type of tattoo.

How did Christian missionary work sometimes make it more difficult for European powers to control their conquered territories?

state and explain the law of demand​

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different facts would need to be presented for a RICO charge to work?

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A). state governors

B). law enforcement officials

C). no one else

D). senators