Anna Garcia Questions. Anna Garcia Clues
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1 Anna Garcia Clues 1. It was hot (92 F), but Anna was wearing a sweater when her neighbor last saw Anna (at 6:30 am, walking her dog). 2. The neighbor made the call at 9:45 am, after Anna didn t answer her phone or her door and the EMT and police arrived at 9:56 am. 3. Anna s dog started barking at about 7:45 am and barked for 2 hours. 4. Anna s front door was broken down. 5. Anna was dead, face down in the entry hall. 6. Though hot outside (92 F), Anna s house was (73 F). Anna Garcia Questions 1. What was the time of death? 2. What injuries did Anna have? 3. Were the injuries old, perimortem or postmortem? 4. Was anything missing from the house? If so, what? 5. What medications was Anna taking (if any)? 6. Had anyone been in the house recently? If so, who? 7. Whose blood is on the floor? Is the blood all from the same person? 8. What caused Anna to vomit? 9. What kind of chemical is in the white pills? 10. Did Anna take any of the pills?
2 Wheel or Ray Method Spiral Method (Inward or Outward) Zone Method Grid Method Line (Strip) Method Link Method Method is not a geometric pattern or easily definable. There is no set pattern. The method requires the investigator to be able to form logical links between crime scene activity and the likely places additional evidence could be found at the scene as a result. Method seeking to find associations between evidence. Investigators evaluate the scene and then proceed through the area in a systematic and logical fashion. Based on the notion that one type of evidence leads to another. Works with large and small, indoor and outdoor crime scenes. Used on large, outdoor crime scenes. Members of the search team are arranged at regular intervals, usually arm s length, and then proceed to search along straight lines. Used on large, outdoor crime scenes. Searchers follow the first line pattern and search in the same manner as the line method. Once the first line pattern is complete, searchers realign on the other line pattern. Used on crime scenes that are comprised of readily definable zones, such as in houses or buildings. Teams are assigned small zones for searching, and then other appropriate searching methods are employed in each zone. Used on crime scenes with no physical barriers, such as with open water, etc. Can either begin at critical point of crime scene (outward spiral) or the outer-edge of the crime scene (inward spiral). Used on small, circular crime scenes. Investigators start from a critical point and travel outward along many straight lines from this point.
3 Crime Scene Sketch (8.5 x 11) Persons of Interest (4 part shutter fold) clues and possible motives for each Careers (4 part shutter fold) how each person would assist with case (the 3 from PLTW + one of choice) Student Response Sheet (identifying unknown substances table, station 1 blood, station 2 hair, station 3 fingerprints, station 4 shoe prints) another 4 shutter fold OR a large flip book Plain Arch: Tented Arch: Circular Whorl Spiral Whorl
4 When experts compare two fingerprints, they look at the arrangement, shape, size, and number of lines in the fingerprint patterns to distinguish one from another. They also analyze very tiny characteristics called minutiae, tiny fingerprint ridge details and make sure to match at least points of similarity between the two prints to establish that they are identical. When two fingerprints show similarities with at least 12 minutiae, it is called a 12 Point Match, something you may have heard on your favorite crime scene show. Below are the ten most frequent minutiae, with the ending ridge being the most frequent and the triple fork being the least frequent. Doug Greene Erica Piedmont Lucy Leffingwell Anna Garcia Alex Garcia Alex Garcia Hair Found at Crime Scene Doug Greene Erica Piedmont Lucy Leffingwell Anna Garcia
5 Doug Greene: Alex Garcia: Anna Garcia: Lucy Leffingwell: Erica Piedmont: Shoe Print From Crime Scene
6
7 Time of Death Vernier Graph and Class Results Table Anna s Time of Death (obtained using Glaister Equation): (Anna s Rectal Temperature) = 4 hrs since death at 11 am, so death at ~7 am Height Determination Graph Blood Sample: Clumping with Anti-A Serum: Clumping with Anti-B Serum: Blood Type Blood found at scene Anna Garcia Alex Garcia Doug Greene Erica Piedmont Lucy Leffingwell
8 Substance: Appearance: Texture: Reaction to Indicator 1: Reaction to Indicator 2: Reaction to Indicator 3: Cocaine* Acetaminophen* Acetylsalicylic Acid (aspirin)* Methamphetamine* Ecstasy* Unknown Substance *All substances are simulated
9 Fingerprint Analysis Ridge Pattern Fingerprint Conclusion: The fingerprint Print found at scene ulnar loop lifted from the scene belongs to Alex Garcia. Like Alex s, it has an ulnar loop. It also Anna Garcia spiral whorl shares many minutiae in common with Alex s Alex Garcia ulnar loop print. In fact, I can see no differences at all!!! Doug Greene Erica Piedmont Lucy Leffingwell plain arch ulnar and radial loops ulnar loop Blood Conclusion: The blood at the crime scene does not belong to Alex, Doug or Lucy. It could belong to Anna or Erica, or be a combination of both Anna and Erica s blood. This conclusion is based on the fact that both Erica and Anna have type B blood and the blood at the scene was also type B. I know that because the blood clumped when anti-b serum was added to it, showing that the blood cells had B antigens on them. It did NOT clump when anti-a serum was added, so the cells did NOT contain A antigens. The only type of blood cells that have B antigens but no A antigens is type B blood. To know whether the blood is Anna s, Erica s or a combination, we would need to do further testing, such as DNA analysis. Hair Conclusion: The hair found at the scene belongs to none other than Anna Garcia! I must say, I m a bit let down. The hair at the scene has a smooth cuticle, ruling out Doug and Lucy. The medulla is fairly dark and spotty, ruling out Alex and Erica. Shoe Conclusion: The shoe print found at the scene belongs to none other than Anna Garcia! Wow, what an exciting case! Yeah, the muddy print clearly shows two peaks, which match the size and shape of the peaks on Anna s shoes. Alex s shoes have the most similar pattern, but his peaks are smaller and more numerous, ruling them out.
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