Forensic analysis

MISSISSIPPI CRIME LABORATORY

REPORT DATE: 12/19/2022

Andrew Needham, FTEE
Jackson Laboratory
Jackson, MS 39205
601-987-XXXX (FAX 601-987-XXXX)

Analysis: Evidence Examination; Chemical Analysis; Latent Print Examination

Case #: 006057-12L-2022

Case Description: Jackson Walker death investigation

Investigative Agency: Yoknapatawpha County Sheriff's Department

Investigating Officer(s): Det. S. Murphy, Det. E. Parker


Summary of Preliminary Analysis

Jackson Walker residence

Evidence # and DescriptionFindings
006057-41: One (1) 12-ounce bottle of liquid multi-symptom nighttime cold and flu medicine, empty
  • Generic, 12-ounce bottle, empty. Residual liquid contained traces of glyceryl guaiacolate, dextromethorphan hydrobromide, FD&C Green No. 3, ethyl paraben, propyl paraben, ethylene glycol, propylene glycol, and methanol.
  • One (1) partial fingerprint consistent with Jackson Walker
  • One (1) partial fingerprint consistent with Sylvia Mason
006057-83-001: One (1) bag of Funyuns
  • 1.25 ounce. Unopened. No evidence of tampering.
  • Two (2) full and partial fingerprints consistent with Sylvia Mason
006057-83-002 through 006057-83-004: Three (3) protein bars
  • Aloha® brand, pumpkin seed. Unopened. No evidence of tampering.
  • Three (3) full and partial fingerprints consistent with Sylvia Mason
  • Two (2) unidentified full and partial fingerprints
006057-83-005: One (1) bag of foil-covered chocolate Hanukkah coins
  • Lake Champlain Chocolates® brand, 5.8 ounces. Unopened. No evidence of tampering.
  • One (1) unidentified partial fingerprint
006057-84-001: One (1) empty cold medicine box  
  • AllCare® brand. Empty.
  • One (1) partial fingerprint consistent with Jackson Walker
  • Two (2) unidentified full and partial fingerprints
006057-84-004: One (1) bottle of sore throat spray
  • Chloraseptic® brand sore throat spray, 1 ounce. Unused. No evidence of tampering.
  • One (1) unidentified partial fingerprint
006057-84-006: One (1) box of facial tissues
  • Kleenex® brand. Unopened. No evidence of tampering.
  • Three (3) unidentified full and partial fingerprints
006057-84-007: One (1) box of Earl Grey tea bags
  • Taylors of Harrogate® brand, 12-count. Unopened. No evidence of tampering.
  • Two (2) unidentified full and partial fingerprints
006057-84-008: One (1) box of chamomile tea bags
  • Taylors of Harrogate® brand, 12-count. Unopened. No evidence of tampering.
  • Two (2) unidentified full and partial fingerprints
006057-84-009: One (1) jar of honey
  • Beekeeper’s Choice® brand, 4 ounces. Unopened. No evidence of tampering.
  • One (1) unidentified partial fingerprint
006057-84-021: One (1) Pets at the White House: 50 Years of Presidents and Their Pets by Jennifer B. Pickens hardcover book
  • Three (3) unidentified full and partial fingerprints
006057-84-022: One (1) 375-ml bottle of Maker's Mark bourbon, 1/2 remaining
  • 6 ounces remaining
  • One (1) partial fingerprint consistent with Jackson Walker
006057-84-023: One (1) get-well greeting card signed "Larissa"
  • One (1) partial fingerprint consistent with Jackson Walker
  • Two (2) unidentified full and partial fingerprints

Sylvia Mason residence

Evidence # and DescriptionFindings
006057-103: One (1) gallon jug of antifreeze, half remaining
  • Peak® brand, 50/50 prediluted ready-to-use antifreeze & coolant, conventional green formula, half remaining
  • Two (2) full and partial fingerprints consistent with Sylvia Mason
  • One (1) partial fingerprint consistent with Joshua Walker
006057-104: One (1) funnel
  • Arcan® brand, 3-inch diameter top; contains residue of ethylene glycol
  • One (1) partial fingerprint consistent with Sylvia Mason
006057-105: One (1) section of plastic tubing
  • Brand undetermined. No residues found on or inside tubing
006057-106: One (1) cellphone
  • Samsung® brand, Galaxy Note 20 Ultra 5G; contents include contact information for Joshua Walker
  • Four (4) full and partial fingerprints consistent with Sylvia Mason
  • One (1) partial fingerprint consistent with Joshua Walker
006057-107: One (1) handwritten journal
  • Contains 46 love poems, 29 of them addressed to "JW, my muse." Handwriting analysis to verify authorship is pending.
  • Three (3) full and partial fingerprints consistent with Sylvia Mason
  • One (1) partial fingerprint consistent with Jackson Walker
006057-108: One (1) desktop computer
  • Dell® brand, Inspiron 3670 desktop computer, 9th Gen Intel Core i5-9400 Processor, 16GB RAM. Registered to Sylvia Mason.
  • Email contacts include Joshua Walker at jwalker321@*****.com
006057-109 through 006057-113: Five (5) photos with Sylvia Mason and Joshua Walker depicted, cropped
  • Physical photographs cropped to remove portions not pertaining to subjects Sylvia Mason and Joshua Walker
  • Five (5) full and partial fingerprints consistent with Sylvia Mason
006057-114: One (1) handwritten love note, partially written, crumpled, recovered from bedroom trash can
  • Text reads, "My Love JW, When you are around, my heart jumps…"
006057-115: One (1) handwritten love note, partially written, crumpled, recovered from bedroom trash can
  • Text reads, "My Love JW, When you are around, my whole body knows it. My heart races to meet you. My lungs fill…"
  • One (1) partial fingerprint consistent with Sylvia Mason
006057-116: One (1) 12-ounce Robitussin® Cough & Chest Congestion Liquid Medicine, Cherry-Flavored, unopened
  • No evidence of tampering
  • Two (2) full and partial fingerprints consistent with Sylvia Mason
006057-117: One (1) 12-ounce Tylenol® Cold & Flu Liquid Cough Medicine, Wild Berry-Flavored, ¾ remaining
  • No evidence of tampering
  • Two (2) full and partial fingerprints consistent with Sylvia Mason
006057-118: One (1) 12-ounce NyQuil® Severe Cold & Flu Liquid Medicine, Mint-Flavored ¾ remaining
  • No evidence of tampering
  • Three (3) full and partial fingerprints consistent with Sylvia Mason
006057-119: One (1) 12-ounce AllCare® Cold and Congestion Liquid Medicine, Grape-Flavored, ¾ remaining
  • No evidence of tampering
  • Three (3) full and partial fingerprints consistent with Sylvia Mason
006057-120: One (1) 12-ounce generic cold and cough liquid Medicine, Deep Cool Mint-Flavored, ⅓ remaining
  • Preliminary test positive for ethylene glycol. Additional analyses are ongoing
  • Five (5) full and partial fingerprints consistent with Sylvia Mason
006057-121: One (1) 12-ounce generic cough medicine, blue raspberry-flavored, ½ remaining
  • Preliminary test positive for ethylene glycol. Additional analyses are ongoing
  • Three (3) full and partial fingerprints consistent with Sylvia Mason
006057-122: One (1) 12-ounce Tukol® Multi Symptom Cold & Flu Liquid Medicine, Honey-flavored, unopened
  • No evidence of tampering
  • Two (2) full and partial fingerprints consistent with Sylvia Mason
006057-123: One (1) email printout, from jwalker321@*****.com to Sylvia Mason, crumpled, recovered from bathroom trash can
  • Email printout addressed to Sylvia Mason at (onlylive1@*****.com) from Joshua Walker (jwalker321@*****.com). Content describes the fatal dosage of ethylene glycol for a 150-pound person
  • Three (3) full and partial fingerprints consistent with Sylvia Mason

Joshua Walker residence

Evidence # and DescriptionFindings
006057-125: One (1) handwritten love note, crumpled, recovered from right front passenger floorboard
  • Text reads, "My Love JW, When you are around, my whole body knows it. When you are far, I’m left empty, like sunken galleons under the sea. You are the reason I take the next breath. I need you just to be."
  • Three (3) full and partial fingerprints consistent with Sylvia Mason
  • One (1) partial fingerprint consistent with Joshua Walker
006057-126: One (1) Walgreens receipt, crumpled, recovered from right front passenger floorboard
  • Two (2) full and partial fingerprints consistent with Joshua Walker
006057-127: One (1) cellphone
  • Samsung® brand, Galaxy S21 FE 5G; reset to factory settings. All personal data cleared
  • Five (5) full and partial fingerprints consistent with Joshua Walker
006057-128: One (1) laptop computer
  • Hewlett Packard® Pavilion Plus laptop 14t-eh000, Intel Core i5-1240 Processor, 16GB RAM. Registered to Joshua Walker. Email software lists Joshua Walker’s email as jwalker321@*****.com.
  • No emails received from or sent to Sylvia Mason listed
006057-129: One (1) USB thumb drive
  • Apacer® brand. USB 3.1 flash drive, 32GB. No contents
  • Two (2) full and partial fingerprints consistent with Joshua Walker
006057-130: One (1) electronic tablet
  • Samsung® brand. Galaxy Tab A8, 10.5-inch tablet, 32GB. No content referencing Sylvia Mason
  • Six (6) full and partial fingerprints consistent with Joshua Walker
006057-131: One (1) lipstick-stained sticky note, recovered from bathroom trash can
  • A lipstick mark in the shape of a kiss and handwritten text reading, "The best moments in life are the ones you can’t tell anyone about." Handwriting, lip print, and DNA analyses are ongoing.
  • One (1) partial fingerprint consistent with Sylvia Mason
006057-132: One (1) 100 ml SachaJuan® Moisturizing Shampoo, 3/4 remaining
  • One (1) partial fingerprint consistent with Sylvia Mason
006057-133: One (1) 100 ml SachaJuan® Moisturizing Conditioner, 3/4 remaining
  • Two (2) full and partial fingerprints consistent with Sylvia Mason
006057-134: One (1) 12.5-ounce Alberto Vo5® Men’s 3-in-1 Shampoo Conditioner Body Wash, 1/4 remaining
  • Two (2) full and partial fingerprints consistent with Joshua Walker


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