Chapter 202 20PPT Essay

Submitted By Stephanie-Powers
Words: 1104
Pages: 5

CRIMINAL
INVESTIGTATIONS
CHAPTER 2
DOCUMENTING THE CRIME SCENE: NOTE
TAKING, PHOTOGRAPHING, AND
SKETCHING

INITIAL RESPONDERS
Must protect the scene by;
 Conceptualizing the crime scene
 Establishing boundaries
 Keep none essential personnel out
 Remove unauthorized personnel
 Detaining and separating witnesses
 Containing area until relieved
 Detective/investigator response

CASE STUDY

THE WALK-THROUGH
Conducted to give you a prospective on

type crime, how committed and what evidence to look for
Evidence is located and protected, allows scene boundaries to be set
Should include: entry/exit pts., crime route, contact objects, waiting areas, missing objects, turf markings, unusual
M.O.’s, did they eat anything

DOCUMENTING THE CRIME SCENE
Field notes: Not only a Police

Problem!
An essential part of the investigators job Don’t rely on your memory!!!
Help you write report and testify
 Best evidence rule?
Field note are the essence of your


report, the five W and an H
They help impeach, rehabilitate, prepare for interviews/interrogations, etc. FIELD NOTES CHECKLIST
Write legible
Complete thoughts
Date and hour all

entries
One case one set of notes Can use notes to share information
Use of field notes in court

Corroborate all

information
Too much better than not enough
Use of a tape recorder Keep your report current Where to store your notes
To keep ort not keep is the question FIELD NOTES CHECKLIST
REMEMBER :
 Effective

notes are complete

 Factual
 Accurate
 Specific
 Clear
 Arranged

in chronological order
 Well organized.

INVESTIGATIVE
PHOTOGRAPHY
Conducted after walk through, before

anything is touched or moved.
Take far to close, big to small
Photographs
 Laying the foundation
Videotapes
Logging of photos and tapes
 Number (chronologically) and describe, far to close, general to specific  Type equipment , film used, case number, disposition of film

FIELD NOTES CHECKLIST
Admissibility of Notes
 Use of notes in court is the most important legal application
 All officers who are present at the scene and who witness the writing of the notes, can testify to it
 Your police report is a summary of the notes taken and essentially becomes your notes for testimony

PHOTOGRAPHY
ADVANTAGES

DISADVANTAGES

1. Taken

immediately

2.
3.
4.
5.

Accurately Represent the crime scene in court
Effective on a jury
Corroborate the facts presented
Digital photography

1.
2.
3.
4.

Contain both relevant and irrelevant Irrelevant material may distract viewers Cameras my lack the capability to see discrete evidence
Distance

PHOTOGRAPHY

PHOTOGRAPHY

PHOTOGRAPHY

PHOTOGRAPHY
TERMS
1.

2.

3.

Material
PhotographRelevant
Photograph
Competent
Photograph

1. Relates to

Specific Case and
Subject
2. Helps Explain
Testimony
3. Accurately
Represents What it purports to represent VIDEO
ADVANTAGES
1.
2.
3.
4.
5.

DISADVANTAGES

Bring Crime Scene to Life
Shows Distance
Incorporate Audio(smell)
More likely to capture all evidence
Fully Document what is being seen
1.
2.
3.

CSI Effect (Juries Expect it)
Many agencies don’t provide training Poor video can damage a case

VIDEO
Surveillance Photography or Video
 Establishes

and records the criminal behavior without the suspect knowing
 Businesses have Surv. Video
 In car cameras
 Undercover operations
 Suspects own cell phone video( Think social media)

Case Study

Case Study

Case Study

Case Study

THE CRIME SCENE SKETCH
Portrays the physical facts
Relates to the sequence of events
Establishes the precise location and

relationships of objects and evidence at the scene
Creates a mental picture
Permanent record
Can and is usually admissible in court

CRIME SCENE SKETCHES
The rough sketch
Steps in sketching the crime scene
 Observe and plan
 Measure
 Locate objects and evidence
 Record details
 Make notes
 Identify sketch with legend and scale
 Reassess

CRIME SCENE SKETCHES
The finished scale drawing
…