|
CASE
OF THE
BLOODIED
BULLY
|
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to the Stories Home Page |
Forward
to the Case Report (Student
Pages) |
| MAJOR
EVIDENCE |
TECHNIQUES |
SET
UP FOR A PARTICULAR CASE * |
| Blood
Samples
- from
Samuel Herrick
- from
Michael Brown
|
Gas
chromatography (ethanol)
Gas
chromatography - mass spectrometry (drugs) |
- Herrick:
ethanol (0.15 g/100 mL) ; cocaine (200 ng/mL)
- Brown:
ethanol (0 g/100 mL) ; cocaine (400 ng/mL)
|
| Gunshot
Residue Samples (Handwashings: left hand / right hand)
- from
Samuel Herrick
- from
Michael Brown
- from
Donna Stevens
- from
Caroline Stevens
|
Atomic
Absorption spectrophotometry (lead) |
- Herrick:
300 ppb / 400 ppb Pb
- Brown:
background level
- Donna
Stevens: 700 / 1300 ppb
- Caroline
Stevens: 700 / 500 ppb
|
| Arson
Sample and Flammables
- carpet
from crime scene
- unburned
carpet
- liquid
from Stevens' home
- liquid
from Herrick's apartment
|
Gas
chromatography |
- Crime
scene: kerosene added to carpet that is subsequently burned.
- Kerosene
at the Stevens' home
- Gasoline
at Herrick's apartment
|
| Ink
Samples from Pens
- Suicide
note
- from
Samuel Herrick
- from
Michael Brown
- from
Donna Stevens
- from
Caroline Stevens
|
UV-Visible
spectrophotometry (color)
Liquid
chromatography (components) |
- Suicide
note: UltraFine Flair
- Herrick:
Flair B0
- Brown:
PMOP; PaperMater
- D.
Stevens: UltraFine Flair
- C.
Stevens: Sanford Sharpie
|
| White
Powder from Michael Brown |
Infrared
spectrophotometry (bulk drug) |
- Mixture
of glucose and caffeine ("cocaine")
|
* ONE POSSIBLE SCENARIO: Samuel Herrick did not kill himself; rather he was
murdered by his abused lover, Donna Stevens. After shooting and killing Herrick,
Donna started a fire in the apartment in hopes of covering her tracks.