Murder In Moscow: The Experts Behind The case Against Bryan Kohberger (Part 14) (9/12/26)

0:00What's up everyone and welcome back to the program. In this episode we're going to pick up where he left off with the experts... Behind the Brian Coburger case... Exhibit S11... Amended Supplemental Expert Disclosure... Catherine White... The state is previously disclosed Catherine White, formerly Daze, forensic scientist 3, as an expert witness in the field of Biology and DNA, which includes but in no way is limited to DNA extraction, quantification, amplification, analysis, and interpretation analysis... Including but not limited to S.K.R. data, Y.S.K.R. data, and S.K.R. mix, probabilistic genome typing, forensic biology, serology, which includes but in no way is limited to examination of evidence for the presence of biological fluids and trace evidence. The state hereby incorporates its response and attachments filed on December 18th, 2024, and February 16th, 2025, and is hereby supplementing those responses as follows.

1:03White may testify about DNA, which is genetic material contained in cells that may be utilized for human identification. DNA may be present on an item in the form of biological materials such as blood, semen, and saliva, or it may be left on an item when it's handled. The evidence in possible potential DNA evidence is collected for preservation and may be sent for further testing by qualified analysts. DNA can be collected by swabbing an item or by taking a cutting directly from an item. Reference DNA samples can be collected directly from individuals. DNA can be used to identify individuals, link individuals to crime scenes, link crime scenes, as well as exclude individuals from DNA profiles that we obtain. There are four steps to DNA analysis, one extraction. Add chemicals to break open all the cells to release the DNA. Two quantification, amount of DNA is measured within each sample. Three amplification. Copy the specific location of DNA using a chain reaction.

2:08Four, developing DNA profile. Visualize the DNA profile, which looks like peaks on a graph. Investigations can be between evidence and reference samples to include or exclude an individual from a single source or a mixture DNA profile. For exclusions to single source profiles, the exclusion can be made by visually comparing DNA profiles. For mixture samples, a software tool, STR mix, can be used to aid in this comparison. White may explain how reference samples can be used for comparison and how an individual may be excluded as a contributor to a DNA profile. White was able to exclude a suspect as a source of the DNA profile previously obtained from item 1.1. This conclusion is explained in white to report 6, Bates pages, 607 through 626. White was the analyst tasked with performing presumptive testing, swabbing, and examinations on several items taken from 127 Parkside Avenue, Blake's Leap, Pennsylvania, which was

3:11taken from the trash from Colbergers Residents at 119 Lambs in Drive, Albright'sville, Pennsylvania. White forwarded these items to DNA analysis. White is anticipated to explain what presumptive testing as well as the purpose and process of swabbing and examining evidence. Further details regarding the processing of items from the trash poll can be found in white to report 16. David S. 12, amended supplemental expert disclosure, Stephanie Witt. The state is previously disclosed, Stephanie Wilt, excuse me, Wilt, not Wilt. The state is previously disclosed, Stephanie Wilt, forensic scientist as an expert witness in the field of forensic biology and DNA, which includes but in no way is limited to DNA extraction and quantification. The state hereby incorporates its previous responses and attachments filed on December 18, 2024 and is hereby supplementing those responses as follows. Wilt can be expected to testify about trace evidence as well as the presumptive testing

4:14for the presence of blood. A presumptive blood test is a preliminary screening test used to indicate the possible presence of blood. Presumptive testing is performed by taking a small sample of a suspected blood stain and adding chemicals. If a color change occurs within one minute, the stain is presumptive positive. If no color change occurs, the stain is presumptive negative. Additionally Wilt may discuss lab protocol and procedures including collection, including swabbing, examination, consumption, and the disposition of evidence. Examining evidence is done to identify biological stains or material present on items and collect samples for DNA. Consumption of evidence is using an entire sample for DNA testing. This is typically utilized when a low level of DNA is anticipated. More specifically Miller will provide an explanation of what DNA is, how DNA can be collected, and how DNA can be used. Wilt will also discuss DNA to the following extent.

5:17DNA is genetic material contained in cells that may be utilized for human identification. DNA might be present on an item in the form of biological materials such as blood, sea manners, saliva, or maybe left on an item when it's handled. Biological evidence and possible potential DNA evidence is collected for preservation and may be sent for further testing by qualified analysts. DNA can be collected by swabbing an item or by taking, or cutting directly, from an item. Reference DNA samples can be collected directly from individuals. DNA can be used to identify individuals, link individuals to crime scenes, link crime scenes as well as exclude individuals from DNA profiles that we obtain. Wilt will also testify about what trace evidence is and how it's collected for analysis. Trace biological evidence includes skin cells or hair. Skin cells are collected by swabbing areas of interest and hairs can be collected by manually

6:17removing them from an item. Wilt will testify that she swabbed item 1, K-Bar-Nive Sheath for DNA collection. Wilt's testimony will include how the item was examined, what observations were made prior to collection, and how the different areas of item 1 were swabbed separately. Item 1-1. Swab of front strap. Item 1.2. Swab of edges on handle portion. Item 1.3. Swab of edges on blade portion. Item 1.4. Swab stain on the back. Wilt will testify that she forwarded the swabs from item 1 along with DNA analysis. Wilt's involvement regarding item 1 can be found in Report 1, Bates pages 265 through 266. Report 1 contains several photos of item 1 that may be used to aid Wilt's testimony. Wilt swab many items for DNA analysis, in this case, which items are described in Report 3, Bates pages 492 through 506, Report 8, Bates pages 507 through 501, Report 9, Bates

7:20pages 512 through 523, Report 14, Bates pages 5647 through 5661, Report 22, Bates pages 5684 through 5720, Report 29, Bates pages 9309 through 9313, Report 33, Bates pages 1429 and 14309, Report 35, Bates pages 14630 through 14640. However, the state intends to explore Report 1 during Wilt's testimony more extensively, exhibit as 13 amended supplemental expert disclosure, Haley Youngling. The state is previously disclosed Haley Youngling forensic scientist 1 has an expert witness in the field of forensic science, which includes but in no way is limited to latent prints, Euclis-Wab collection, and scene processing. The state hereby incorporates its previous responses and attachments, fueled on December

8:2018, 2024, and is hereby supplementing its responses as follows. Youngling may discuss the process of photographing crime scenes, the purpose of processing the crime scene is to collect as much information and evidence as possible, in a pristine, a condition as possible. The process involves assessing the situation and the scene, observing the condition of the scene, documentation of the scene via photography, written observations, sketches or diagrams, searching systematically for items or materials that may have evidentiary value, collecting items in a way that will preserve them, and prevent alteration, contamination and tampering, and chemical or physical processing if needed to detect evidence that is not readily available. Items that may have evidentiary value are identified, documented, and collected. It is made to ensure that items are preserved as found. The types and sizes of packaging are determined based on the type of evidence, cigarette butt, paper evidence and aloe. Paper note receipt, paper evidence and aloe.

9:21Computer and electronics components, paper evidence and aloe per paper bag, depending on size and examination to be completed. Larger items like computer towers or monitors that do not fit into standard evidence bags may be identified with an evidence tag. People type glove, paper evidence and aloe, vacuum dust container, paper evidence bag. Items may be processed for latent prints on scene or collected for future processing in the laboratory. Laten print evidence can be developed on scene by using light enhancement, powder or blood-enhancing chemicals, observed or developed prints are preserved with photography and or tapelifting. Preserved impressions can be used for further latent print analysis. DNA evidence may be collected at a crime scene if there is observable biological material in the form of blood, semen, saliva, hair or other tissue present. Some biological material may not be visible but may be collected for its possible presence. Possible DNA material refers to areas or items that are likely to have DNA based on the

10:23details of the case or known activities. Potential DNA material refers to areas or items that may have DNA based on how they may have been handled, touch DNA. Biological DNA material on a smaller item is generally collected by collecting the entire item, e.g. shirt, weapon, bottle, visible biological DNA, material on structural surface, e.g. floor, wall, ronolary object, furniture, is generally collected by using one or two sterile cotton swabs simultaneously. The swabs may be moistened with sterile water prior to sample collection. After swabbing the surface, the swabs are allowed to air dry and pour its packaging. Any biological DNA material on those swabs is preserved and can be used for future testing. Collection of possible and potential DNA are collected in the same method as described for visible DNA using sterile water and sterile swabs. DNA is genetic material contained in human cells that may be utilized for human identification.

11:25DNA may be present on an item in the form of biological materials such as blood, semen, and saliva, or maybe left on an item when it's handled, touch DNA. Biological evidence and possible potential DNA evidence is collected for preservation and may be sent on for further testing by qualified DNA, crime scene personnel, do not test for DNA specifically. Alright folks, we're going to wrap up right here and in the next episode we're going to pick up where we left off. All the information that goes with this episode can be found in the description box.