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FORENSICS LAB: WHO KILLED BARRY? | COMPLETE ANSWER KEY
& RATIONALE | 150 NGN-STYLE PRACTICE QUESTIONS WITH
DETAILED RATIONALES
TABLE OF CONTENTS
NGN Partial Credit Cheat Sheet (Below)
Case Study 1: Crime Scene Investigation - Questions 1-15
Case Study 2: Barry Cuda - The Victim - Questions 16-25
Case Study 3: Witness Interrogation - Honor Shift - Questions 26-35
Case Study 4: Witness Interrogation - Alexandra Dock - Questions 36-45
Case Study 5: Witness Interrogation - Goldie Crumm - Questions 46-55
Case Study 6: Witness Interrogation - Andy Syze - Questions 56-65
Case Study 7: Witness Interrogation - John Dory - Questions 66-80
Case Study 8: DNA Analysis (STR, CODIS, PCR) - Questions 81-100
Case Study 9: Evidence Collection and Analysis - Questions 101-120
Case Study 10: Deductive Reasoning and Case Resolution - Questions 121-135
Case Study 11: Forensic Nursing Applications - Questions 136-150
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CASE STUDY 1: CRIME SCENE INVESTIGATION
QUESTION 1: CRIME SCENE PROTOCOL
• Question: The body of Barry Cuda is found in an alley at Grimsby Docks in the 1950s.
The crime scene is bustling with activity. What is the priority nursing action upon arrival
at a crime scene?
• Options:
A. Begin collecting evidence immediately
B. Secure the scene and ensure safety of all individuals present
C. Interview witnesses before they leave
D. Perform a physical assessment of the victim
• Zero-Flip Premium Rationale Box:
o Correct Answer: B
o Pathophysiology Summary: The priority at any crime scene is to secure the
scene to preserve evidence and ensure the safety of all individuals present. This is
the first step in the chain of evidence preservation, preventing contamination and
loss of critical information. Only after the scene is secured should evidence
collection and interviews begin.
o Distractor Pitfalls: Option A is incorrect as evidence collection should not begin
until the scene is secured. Option C is incorrect as interviewing witnesses before
securing the scene could lead to loss of evidence. Option D is incorrect as the
victim is already deceased.
QUESTION 2: SATA - EVIDENCE COLLECTION PROCEDURES
• Question: The forensic team is collecting evidence from the crime scene in the Grimsby
Docks alley. Which procedures are essential for proper evidence collection? Select all
that apply.
• Options:
A. Document the location of each piece of evidence
B. Use gloves and appropriate personal protective equipment
C. Photograph evidence before collection
D. Mix all evidence together for efficient processing
E. Package evidence separately to prevent cross-contamination
• Zero-Flip Premium Rationale Box:
o Correct Answers: A, B, C, E
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o Pathophysiology Summary: Proper evidence collection requires: documenting
the location of each piece of evidence, using PPE, photographing evidence before
collection, and packaging evidence separately to prevent cross-contamination.
These steps ensure the integrity and admissibility of evidence.
o Distractor Pitfalls: Option D is incorrect; mixing evidence together can cause
cross-contamination and compromise the integrity of the evidence.
QUESTION 3: DEDUCTIVE REASONING - RED HERRINGS
• Question: During the investigation, the team encounters items labeled "Red Herrings."
What is the role of a red herring in a forensic investigation?
• Options:
A. Key evidence that identifies the killer
B. A distraction or false clue that leads investigators away from the truth
C. DNA evidence found at the scene
D. The murder weapon used in the crime
• Zero-Flip Premium Rationale Box:
o Correct Answer: B
o Pathophysiology Summary: A "red herring" is a false clue or piece of
information that distracts investigators from the relevant evidence. In the "Who
Killed Barry?" exercise, white circles represent both clues and red herrings,
requiring careful differentiation to solve the mystery.
o Distractor Pitfalls: Options A, C, and D are incorrect; red herrings are
specifically false clues, not actual evidence.
QUESTION 4: SATA - CRIME SCENE DOCUMENTATION
• Question: The forensic team is documenting the crime scene. Which methods should be
used to properly document the scene? Select all that apply.
• Options:
A. Photographs of the scene from multiple angles
B. Written notes describing the scene
C. Sketching the layout of the scene
D. Memorizing the scene without documentation
E. Video recording the scene
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• Zero-Flip Premium Rationale Box:
o Correct Answers: A, B, C, E
o Pathophysiology Summary: Proper crime scene documentation includes
photographs, written notes, sketches, and video recordings. These methods create
a permanent record of the scene that can be used for analysis and in court
proceedings.
o Distractor Pitfalls: Option D is incorrect; relying on memory alone is unreliable
and not an acceptable method of documentation.
QUESTION 5: SATA - CHAIN OF CUSTODY
• Question: The forensic team is collecting and processing evidence. Which principles are
essential for maintaining the chain of custody? Select all that apply.
• Options:
A. Evidence must be sealed and labeled
B. Evidence must be signed for by each person who handles it
C. Evidence must be stored in a secure location
D. Evidence can be left unsecured if it is not valuable
E. Evidence must be tracked from collection to court
• Zero-Flip Premium Rationale Box:
o Correct Answers: A, B, C, E
o Pathophysiology Summary: The chain of custody requires that evidence be
sealed and labeled, signed for by each person who handles it, stored in a secure
location, and tracked from collection to court presentation. This ensures the
admissibility and integrity of the evidence.
o Distractor Pitfalls: Option D is incorrect; all evidence must be secured,
regardless of perceived value.
QUESTION 6: SATA - GRIMSBY DOCKS SETTING
• Question: The crime occurs at Grimsby Docks in the 1950s. The team investigates
witnesses, including Tim Burr, Sly Backander, and others. Which statements about the
setting of the "Who Killed Barry?" investigation are correct? Select all that apply.
• Options:
A. The murder takes place at Grimsby Docks
FORENSICS LAB: WHO KILLED BARRY? | COMPLETE ANSWER KEY
& RATIONALE | 150 NGN-STYLE PRACTICE QUESTIONS WITH
DETAILED RATIONALES
TABLE OF CONTENTS
NGN Partial Credit Cheat Sheet (Below)
Case Study 1: Crime Scene Investigation - Questions 1-15
Case Study 2: Barry Cuda - The Victim - Questions 16-25
Case Study 3: Witness Interrogation - Honor Shift - Questions 26-35
Case Study 4: Witness Interrogation - Alexandra Dock - Questions 36-45
Case Study 5: Witness Interrogation - Goldie Crumm - Questions 46-55
Case Study 6: Witness Interrogation - Andy Syze - Questions 56-65
Case Study 7: Witness Interrogation - John Dory - Questions 66-80
Case Study 8: DNA Analysis (STR, CODIS, PCR) - Questions 81-100
Case Study 9: Evidence Collection and Analysis - Questions 101-120
Case Study 10: Deductive Reasoning and Case Resolution - Questions 121-135
Case Study 11: Forensic Nursing Applications - Questions 136-150
, 2
CASE STUDY 1: CRIME SCENE INVESTIGATION
QUESTION 1: CRIME SCENE PROTOCOL
• Question: The body of Barry Cuda is found in an alley at Grimsby Docks in the 1950s.
The crime scene is bustling with activity. What is the priority nursing action upon arrival
at a crime scene?
• Options:
A. Begin collecting evidence immediately
B. Secure the scene and ensure safety of all individuals present
C. Interview witnesses before they leave
D. Perform a physical assessment of the victim
• Zero-Flip Premium Rationale Box:
o Correct Answer: B
o Pathophysiology Summary: The priority at any crime scene is to secure the
scene to preserve evidence and ensure the safety of all individuals present. This is
the first step in the chain of evidence preservation, preventing contamination and
loss of critical information. Only after the scene is secured should evidence
collection and interviews begin.
o Distractor Pitfalls: Option A is incorrect as evidence collection should not begin
until the scene is secured. Option C is incorrect as interviewing witnesses before
securing the scene could lead to loss of evidence. Option D is incorrect as the
victim is already deceased.
QUESTION 2: SATA - EVIDENCE COLLECTION PROCEDURES
• Question: The forensic team is collecting evidence from the crime scene in the Grimsby
Docks alley. Which procedures are essential for proper evidence collection? Select all
that apply.
• Options:
A. Document the location of each piece of evidence
B. Use gloves and appropriate personal protective equipment
C. Photograph evidence before collection
D. Mix all evidence together for efficient processing
E. Package evidence separately to prevent cross-contamination
• Zero-Flip Premium Rationale Box:
o Correct Answers: A, B, C, E
, 3
o Pathophysiology Summary: Proper evidence collection requires: documenting
the location of each piece of evidence, using PPE, photographing evidence before
collection, and packaging evidence separately to prevent cross-contamination.
These steps ensure the integrity and admissibility of evidence.
o Distractor Pitfalls: Option D is incorrect; mixing evidence together can cause
cross-contamination and compromise the integrity of the evidence.
QUESTION 3: DEDUCTIVE REASONING - RED HERRINGS
• Question: During the investigation, the team encounters items labeled "Red Herrings."
What is the role of a red herring in a forensic investigation?
• Options:
A. Key evidence that identifies the killer
B. A distraction or false clue that leads investigators away from the truth
C. DNA evidence found at the scene
D. The murder weapon used in the crime
• Zero-Flip Premium Rationale Box:
o Correct Answer: B
o Pathophysiology Summary: A "red herring" is a false clue or piece of
information that distracts investigators from the relevant evidence. In the "Who
Killed Barry?" exercise, white circles represent both clues and red herrings,
requiring careful differentiation to solve the mystery.
o Distractor Pitfalls: Options A, C, and D are incorrect; red herrings are
specifically false clues, not actual evidence.
QUESTION 4: SATA - CRIME SCENE DOCUMENTATION
• Question: The forensic team is documenting the crime scene. Which methods should be
used to properly document the scene? Select all that apply.
• Options:
A. Photographs of the scene from multiple angles
B. Written notes describing the scene
C. Sketching the layout of the scene
D. Memorizing the scene without documentation
E. Video recording the scene
, 4
• Zero-Flip Premium Rationale Box:
o Correct Answers: A, B, C, E
o Pathophysiology Summary: Proper crime scene documentation includes
photographs, written notes, sketches, and video recordings. These methods create
a permanent record of the scene that can be used for analysis and in court
proceedings.
o Distractor Pitfalls: Option D is incorrect; relying on memory alone is unreliable
and not an acceptable method of documentation.
QUESTION 5: SATA - CHAIN OF CUSTODY
• Question: The forensic team is collecting and processing evidence. Which principles are
essential for maintaining the chain of custody? Select all that apply.
• Options:
A. Evidence must be sealed and labeled
B. Evidence must be signed for by each person who handles it
C. Evidence must be stored in a secure location
D. Evidence can be left unsecured if it is not valuable
E. Evidence must be tracked from collection to court
• Zero-Flip Premium Rationale Box:
o Correct Answers: A, B, C, E
o Pathophysiology Summary: The chain of custody requires that evidence be
sealed and labeled, signed for by each person who handles it, stored in a secure
location, and tracked from collection to court presentation. This ensures the
admissibility and integrity of the evidence.
o Distractor Pitfalls: Option D is incorrect; all evidence must be secured,
regardless of perceived value.
QUESTION 6: SATA - GRIMSBY DOCKS SETTING
• Question: The crime occurs at Grimsby Docks in the 1950s. The team investigates
witnesses, including Tim Burr, Sly Backander, and others. Which statements about the
setting of the "Who Killed Barry?" investigation are correct? Select all that apply.
• Options:
A. The murder takes place at Grimsby Docks
