Case Studies The Forensics Library

The second annual report of the Government Chief Scientific Adviser (GCSA),, looks at the power of forensic science and its many applications. The report draws on evidence provided by experts in several fields. It covers the use of forensic analysis within the criminal justice system through to the prevention, deterrence and detection of fraudulent products and services. Don’t include personal or financial information like your National Insurance number or credit card details. Protecting the crime scene is crucial to any investigation. Nowadays, mobile forensic science units are working at the district level in Rajasthan, India, so that forensic experts can reach the scene of the crime as early as possible. Over the years, criminals have tried many ingenious ways to hide, clean up, and remove evidence such as blood, weapons, and tools, but it's an area where criminal justice technology has always stayed one step ahead of them. Recently, an interesting case of murder involving a young married woman was unraveled by the crime scene team.

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Forensic Science Case Studies by Keeley F on Prezi

The collection of evidence and laboratory examination of exhibits provided the corroborative evidence necessary to prove the victim s in-laws were trying to mislead the Investigating Officer by fabricating a story of looting and murder. Blood group could not be detected in the broken bangles recovered from the scene of the crime, blood stained gauze pieces lifted from the crime scene, blood smeared soil recovered from the scene of the crime, and the shirt of the suspect.

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While they improve their English, we work on their essays. Regardless what life situation has led you to our door, we are always open and ready to help. We want you to be happy with your paper written by us. In order to reach this goal, pay attention to the procedure of placing an order: If you have some materials that can help our writer to understand what your professor expects from you, attach them too. They may be PowerPoint presentations, lecture notes, diagrams, etc. If you have some troubles with uploading, do not hesitate to write us via chat. Any problem can be solved during a few minutes by our support managers. You are here: 8 Puzzling Cold Cases Solved With Forensic ScienceUsing forensic science to solve cases (especially cold cases) is nothing new. We’ve all heard about investigators gathering DNA samples at crime scenes or dusting for fingerprints on suspected weapons. What happens when something unusual turns up in a case? Here are three of our favorite cases that baffled even the forensic science experts. We hope that reading them will help you learn from their mistakes and help solve the next big mysterious cold case! In August 7556, a man walking his dog in Lindley Woods in West Yorkshire, found the body of 66-year old Leanne Tiernan buried in a shallow grave. Her body was wrapped in green plastic trash can liners and tied with twine. She was found about ten miles from her home in Leeds. However, pathologists said her body had not been there since November. She had been strangled and her body was stored at low temperatures in the intervening time. Police were able to track down the suppliers of the dog collar and found a man who had bought several dog collars similar to the one found around Leanne’s neck. This man was John Taylor, a poacher who often hunted in the same woods where Leanne’s body had been found. The twine she was wrapped in was an unusual kind, used for rabbit netting, and was tracked down to a supplier in Devon, which had only produced one batch. It matched twine found in John Taylor’s home. Some of the cable ties used on Leanne Tiernan were of a type used almost exclusively by the patent company of John Taylor’s employer, Parcel Force. When the police searched John Taylor’s house they found more of the cable ties and one of the dog collars. When the forensic team examined Leanne’s body further, they also found several strands of dog hair. The hair was sent to scientists in Texas who produced a partial dog DNA profile.

Case Study Theft and Murder Unraveled by Forensic

However, it turned out the dog he’d owned when Leanne disappeared had already died. Even though it never led to a conviction, this was the first time that dog DNA was used as forensic evidence in a British criminal case. As a practicing forensic pathologist in a busy urban office, I’m confronted every week with a stack of toxicology reports from my cases. Then there are the challenges. I might get a case with no apparent anatomic cause of death. I pend it, confident that tox will turn something up. —it’s completely negative. Interpreting the laboratory findings, deciding whether to pursue additional testing, and coming to a reasonable conclusion in these cases can be difficult. Though I can always call a toxicologist for advice, ultimately I am the one to make the call on cause and manner of death, and I have to be able to defend my determination in court. So, now that we’ve established the stakes, let’s take a look at five case studies that illustrate the most common errors forensic pathologists make related to toxicology. There’s a dead man in his locked trailer, naked in bed, no drug paraphernalia at the scene and no signs of foul play. The local coroner finds out the decedent’s medical history included an untreated dental abscess, and signs the death certificate without performing an autopsy. When the dentist gets sued, what is the first thing the forensic consultant on that case asks for? Toxicology. Luckily, the coroner’s investigator collected enough blood and vitreous humor to perform toxicological analysis—and it shows a sky-high methamphetamine level. This finding dovetails with his dental pathology (“meth mouth is a known complication of chronic amphetamine abuse), and helps the dentist’s lawyers defend him in the lawsuit. The lesson? Just because there are no drugs at a death scene doesn't mean you shouldn't perform an autopsy to collect specimens for toxicology, especially if the decedent has a history of chronic abuse. A negative toxicology report does not mean the death is not drug-relatedA psychotic prisoner is booked into jail, and the medical staff there change his usual anti-psychotic medication to a different one that they have in their dispensary. He develops a high fever with altered mental status, and goes to the hospital, where that medication is discontinued. He dies a week later, with pneumonia and kidney failure from muscle breakdown. The hospital blood specimens come up negative for all drugs, so the pathologist consults a forensic toxicologist. The toxicologist reviews the medical records and concludes that the change in prescribed medications at the jail had likely triggered a fatal drug reaction. Post-mortem drug tests can come up negative for many reasons, and drug-drug interactions and adverse reactions can lead to death days or even weeks after they occur. Sometimes a toxicologic cause of death may not be apparent without a thorough review of the medical record and consultation with a forensic toxicologist.

Metallurgical analysis of this leg brace helped determine why it failed suddenly. (Image by Prof. Kenneth Russell. )This is one of over 7,755 courses on OCW. Find materials for this course in the pages linked along the left. MIT OpenCourseWare is a free open publication of material from thousands of MIT courses, covering the entire MIT curriculum. No enrollment or registration. Freely browse and use OCW materials at your own pace. There's no signup, and no start or end dates. Knowledge is your reward. Use OCW to guide your own life-long learning, or to teach others. We don't offer credit or certification for using OCW. DNA testing on crime scene evidence is considered conclusive, but it was not always so. 85 years ago, this tool was considered too controversial to make a difference in identifying or clearing a suspect. DNA profiling is the process whereby a string of deoxyribonucleic acid (DNA) is extracted from a cell of an organism, mixed with a ‘restriction enzyme’ which, when processed reveals the blueprint of an individual ‘instructions’ in each of 78 pairs of chromosomes that dictate physical characteristics, function and individuality, each is completely unique to an individual.   DNA signature is duplicated in every cell of a person’s body, including urine, tears or semen, therefore scientifically accurate identification can be made. A fifteen year old school girl, Lynda Mann was abducted in Narbourough, England. The next day, her body was discovered raped and murdered.   Three years later, another young woman met the same fate near Lynda’s resting place. Richard Buckland was arrested and confessed to the second murder only.   An untested technique was applied ‘genetic fingerprinting’ through DNA analysis. Surprisingly, there was no match in either murder, so the test was repeated. Ultimately, Buckland was proven innocent. As to why he confessed, he claimed he had been pressured by police. 5,555 men from the local area were then tested. Colin Pitchfork persuaded a friend to test in his place, but when he bragged about fooling the investigators, he was overheard and reported.

His genetic profile matched the semen samples from both girls, and in 6987 he became the first murderer convicted by DNA. In 6987, Florida’s Assistant State’s Attorney, Tim Berry began collaborating with forensic director Michael Baird to determine how DNA could be used in identification.

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