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An essay on forensic science
An essay on forensic science
Significance of forensic science
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The Bodies Are Talking: Will Society Listen? On Thanksgiving evening, November 27, 1992, Sergeant Kenneth Mathison and his wife Yvonne drive their 1988 tan Ford van along Route 131 in Hilo, Hawaii. The rain is pouring down and before he knows it, Kenneth Mathison is awaiting police assistance as he cradles his wife’s dead body in the back of their van. Mathison, a sergeant of 25 years with the Hilo Police Department was allegedly informing his wife, a maternity nursing professional at the Hilo Medical Center, that he was being investigated in his second paternity suit. According to Mathison, when Yvonne heard the news, she jumped from the passenger side of the van. While he was looking for her in the blinding rain, Mathison purportedly ran over his wife. He then carried the body into the van and secured it with yellow rope in the back before attempting to find help. Will the forensic evidence support Mathison’s account of that fateful evening? That night, many witnesses reported having seen a man changing the tire of his van and waving any possible help away angrily while others reported seeing a woman wandering around the side of the dangerous highway. More witnesses reported that Kenneth and his wife were having many violent disputes at their home that usually resulted in Kenneth pursuing an angry Yvonne around the block. The most compelling evidence against Mathison, however, is purely scientific. Detective Paul Ferreira first noticed that the extensive blood stains inside the Mathison van. After hearing Mathison’s original account, he summoned the assistance of famed forensic expert Dr. Henry Lee to analyze what he thought was inconsistent evidence. Blood stains on the paneling and the spare tire in the cargo area reveal low-velocity blood stains meaning that the blood probably dripped from Yvonne’s head onto the floor. The stains found on the roof and steering wheel were contact transfer patterns probably caused by Mathison’s bloody hands. Blood stains on the driver’s side of the van were contact-dripping patterns which indicate that Mathison touched the inside of the van multiple times before and after moving his wife’s body. The final groups of blood stains on the instrument panel of the van were medium-velocity stains which show investigators that Mathison probably struck his wife at least once in the front seat causing the blood to fly from her open head wound. The enormous amounts of blood inside the van lead prosecutor Kurt Spohn to investigate the Mathison case as a murder instead of a misdemeanor traffic violation.
On the evening of Ms. Heggar¡¦s death she was alone in her house. Eddie Ray Branch, her grandson, testified that he visited his grandmother on the day that she was killed. He was there till at least 6:30 p.m. Lester Busby, her grandnephew, and David Hicks arrived while her grandson was still there and they saw him leave. They then went in to visit with Ms. Heggar. While they were there, Lester repaid Ms. Heggar 80 dollars, which he owed her. They left around 7:15 p.m. and went next door to a neighboring friend¡¦s house. David Hick¡¦s went home alone from there to get something but returned within ten minutes of leaving. Because he was only gone for 5-10 minutes, prosecution theorized TWO attacks on Ms. Heggar because he could not have killed his grandmother during this 5-10 minute period alone. At 7:30 p.m., 15 minutes after the two had left, an insurance salesman called to see Ms. Heggar. He knocked for about 2 or 3 minutes and got no reply. Her door was open but the screen door was closed. Her TV was on. He claimed to have left after about 5 minutes and then he returned the next morning. The circumstances were exactly the same. With concern, he went to the neighbor¡¦s house and called the police. His reasoning for being there was because the grandmother¡¦s family had taken out burial insurance three days before she had died.
This case started on July 25, 1984, with the death of a nine year old girl by the name of Dawn Hamilton. The story plays out as follows: Dawn approached two boys and an adult male that were fishing at a pond in a wooded area near Golden Ring Mall in eastern Baltimore, Maryland. Dawn asked the boys to help her find her cousin, they declined the adult male however agreed to help her look. This was the last time anyone saw Hamilton alive. Hamilton’s body was found to have been raped, strangled and beaten with a rock. The police collected a boot print at the scene and DNA that was found in Hamilton’s underwear. The police also relied on the witness testimonies and line-ups, which in this case was the photo array. With the five eye witness testimonies and a tip the believed to be suspect was found. Kirk Noble Bloodsworth a prior U.S. Marine with no prior criminal record was taken into custody and charged with intentional first degree murder, sexual assault and rape. Bloodsworth was basically convicted on the eye witness testimonies. The state requested the death penalty. Bloodsworth was sentenced to two consecutive life terms. (BLOODSWORTH v. STATE, 1988)
The evidence presented to myself and the other juror’s proves that Tyrone Washburn is guilty beyond a reasonable doubt of the murder of his wife, Elena Washburn. On March 12, 1979 Elena Washburn was strangled in the living room of her family’s home. Her body was then dragged to the garage, leaving a trail of blood from the living room to the place it was found. Her husband, Tyrone Washburn, found her in the family’s garage on March 13, 1979 at 1:45 A.M. When officer Dale Chambers arrived at the scene he found her lying face down in a pool of blood. The solid evidence in this case proves only one person, Tyrone Washburn, is guilty of murder.
Even though the prosecution presented evidence to the court, the only clear-cut hard fact the prosecution had against Anthony was that she failed to file a report for her missing daughter Caylee and that when she finally did a month after her daughter had gone missing, she proceeded to lie profusely to the authorities on the events that took place. The prosecution focused highly on the forensic evidence of decay located in the trunk of Casey Anthony’s car. The use of a cadaver dog to search the vehicle led investigators to be able to determine that a decomposing body had been stored in the trunk of the car. The forensics department used an air sampling procedure on the trunk of Casey Anthony’s car, also indicating that human decomposition and traces of chloroform were in-fact present. Multiple witnesses described what they considered to be an overwhelming odor that came from inside the trunk as it where the prosecution believes Caylee’s decomposing body was stowed. Several items of evidence were ruled out to be the source of the odor, as experts were able to rule out the garbage bag and two chlorine containers located in the trunk as the source. The prosecution alleged that Casey Anthony used chloroform to subdue her daughter and then used duct-tape to seal the nose and mouth of Caylee shut, inevitably causing her to suffocate. Based off the
Because police investigators are usually under pressure to arrest criminals and safeguard the community, they often make mistakes. Sometimes, detectives become convinced of a suspect 's guilt because of their criminal history or weak speculations. Once they are convinced, they are less likely to consider alternative possibilities. They overlook some important exculpatory evidence, make weak speculations and look only for links that connect a suspect to a crime, especially if the suspect has a previous criminal record. Picking Cotton provides an understanding of some common errors of the police investigation process. During Ronald Cottons interrogation, the detectives did not bother to record the conversation “But I noticed he wasn 't recording the conversation, so I felt that he could be writing anything down”(79) unlike they did for Jennifer. They had already labelled Ronald Cotton as the perpetrator and they told him during the interrogation “Cotton, Jennifer Thompson already identified you. We know it was you”(82). Jenifer Thompson 's testimony along with Ronald Cotton 's past criminal records gave the detectives more reason to believe Ronald committed the crime. Ronald Cotton stated “ This cop Sully, though, he had already decided I was guilty.”(84). Many investigative process have shortcomings and are breached because the officials in charge make
Two detectives were assigned to the case: Harry Hanson and Finis Brown. [2] When they and the police arrived at the crime scene, it was already swarming with people, gawkers and reporters. The entire situation was out of hand and crowded, everyone trampling all over any hopes for good evidence. [2] One thing they did report finding was a nearby cement block with watery blood on it, tire tracks and a heel print on the ground. There was dew under the body so they knew it had been set there just after 2 a.m. when temperatures dropped to 38 degrees.
Even though inartistic proofs can be questioned, because of the conflicting reports it is obvious someone made an error at some point. The reader does not have to click on a link to view these inartistic proofs, they are embedded right in the website. Documents within the website include: The Valdosta-Lowndes Regional Crime Laboratory, the Official Report done by the Division of Forensic Sciences of the Georgia Bureau of Investigation, and the second autopsy report done by the Forensic Dimension in Florida.
When the first responder got to the scene he adimatately meet the 911 caller, who lead him to a car in an apartment parking lot. The car doors were closed and all of the windows were fogged. The police officer used his flashlight to see inside of the car before opening the door. He found a young African American woman who had been shot several times. The officers quickly called for backup, investigators and medical personnel. While awaiting for their arrival he secured the crime scene with caution tape, creating an initial perimeter setup as discussed in lecture two. Once everyone arrived he left it to them to search the car while he talked to the 911 caller, witnesses and others who had information on who had been present in the car. The investigators were able to collect physical evidence of bullets and cartage casings that were found outside the vehicle and inside the vehicle on the floorboard of the driver’s side. The team determined the bullets came from a 40 caliber. Other types of physical evidence that were found on the scene were the bloody clothing on the victim, the victim’s cell phone and fibers in the car from the driver’s side. personnel at the scene crime took several photographs, powered test for finger prints and did a blood spatter analysis. Stewart’s autopsy revealed that she had been shot at close range in the left hand once and in the
...nd was not conducted as a part of this investigation. The only evidence that was presented was witness statements after the act, and what was told by investigators at the crime scene. The theory’s of what happen are irrelevant given there are no facts to point to.
Late last night on July 17th, a woman of the name Myrtle Wilson was found dead in the middle of the street around midnight. It is pretty clear, based off of the scene that it happened because of the impact of a car moving at high speeds. The area where it happened had signs of skid marks going left and right, right before where Mrs. Wilson was hit. There were very few witnesses to what happened due to the time of night that this occurred but one witness stated “I was just closing up my store when I saw some woman who looked like she was crazy run into the street with several bruises and scars, she saw the car that was coming and seemed that she expected it to stop, but it didn’t. After she was hit, the mysterious car was gone in seconds like as if nothing happened”. Based off if this Witnesses words, police are now trying to look into the reasoning for the bruises that she had before the accident happened. Another Witness stated, “as I was walking home from my friend’s house I noticed a woman lying dead on the ground and it scared me to death, then the car that had hit her sped by me and I could see a man and woman in the car but I didn’t recognize them. They were gone within seconds”. Police have been detailing the scene for over 24 hours at this point but cannot pin point the car
The capture and conviction of Charles Manson took over one and a half years to complete. Within this time period many law enforcement officers and forensics professionals put in countless numbers of hours collecting, preserving and testing the physical evidence they found. In addition, the forensics practices used in this case as well as the police investigation techniques serve as a valuable lesson for those in these fields today. In this paper we will look at some of the crimes that were committed by the Manson Family, the mishandled investigation that followed and the forensic techniques used to aid (and sometimes hinder the efforts) in obtaining convictions against those involved.
“The victims were enjoying the scenery, Doe explains, “the night was warm and beautiful with their dreams ahead of them as big as the stars of that night until the flashlight quickly approached them.” Mike Mageau was attacked in a similar fashion as the first murder: shot once they responded to the killer’s demands of leaving the car; in fact Doe states, “Mageau was certain the man was a police officer, which was the reason he opened the window...to show his ID.” After the shooting an anonymous person contacted the police department, and “He,” Doe explains, “identified himself as being responsible for killing the previous victims, Faraday and Jensen.” However, this one was different since Mageau was alive, though left in critical condition, progress to the investigation could have been substantial enough to identify the killer. Nonetheless, as claimed by Doe, “Progress really was not made” due to the amount of blurred and ambiguous information the police received, which ended up wasting five weeks without making any
Victim Brian Haddock is found to be dead for last 12 hours in a house under construction. The first thing that came under the consideration for the investigators was blood, which was splatter all over the 3 sides of wall. The investigator founds a piece of red colored cloth alongside bloody shoes print on the floor. As the murder was done with the help of some kind of heavy constructing instrument, hammer of every worker at the site was examined. Eventually blood was found on the hammer of one of the worker, but his little sister, was linked with the case as a snuffer dog took investigators to a trash cane where they found a sweater (piece found at the crime scene) & a bill. Then they identified the store from where the sweater was brought alongside Ashley, who bought that sweater.
Andrus, R., Bailey, J., Sprague, T., Springer, F., Tulleners, F., Wiersema, S., et al. (n.d.). Crime Scene
Since homicide is a crime in which a life has been ended, it is highly important the investigation surrounding a homicide be taken seriously and be completed effectively. That is, it is critical for the investigator(s), and other branches of the investigation, to be highly trained in preserving a crime scene, as well as interpreting the evidence left at a crime scene, or surrounding the investigation. There are various techniques available to aid in the examination of a homicide crime scene, but none more importantly than what could be told be the body.