Investigation Methodology
The Geberth methodology and our approach to checklists
Investigation Methodology
IronCase's checklists aren't arbitrary. They're based on established investigation methodologies developed over decades. This page explains the foundations.
The Geberth Methodology
Vernon Geberth's "Practical Homicide Investigation" is the gold standard for death investigation methodology in the United States. First published in 1983, it's now in its fifth edition and used by investigators nationwide.
Why Geberth?
Geberth's approach is:
Comprehensive. It covers everything from scene arrival to case closure.
Practical. Written by a former NYPD homicide commander with real-world experience.
Systematic. Provides checklists and procedures that ensure thoroughness.
Widely adopted. Used in training academies across the country.
Core Principles
Geberth emphasizes:
- Preserve the crime scene — The scene is the primary source of evidence
- Document everything — What you don't document, you don't have
- Think "homicide" until proven otherwise — Never assume suicide or accident
- Work from known to unknown — Start with what you know, follow leads
- Systematic approach — Checklists prevent omissions
The Golden Hour
The "Golden Hour" concept comes from emergency medicine but applies to investigations too.
Why the First Hour Matters
Evidence is most recoverable immediately after discovery:
- Witnesses scatter — People leave the area
- Memory fades — Details become less reliable
- Evidence degrades — Weather, contamination, decay
- Opportunities close — Surveillance footage loops, records purge
What Happens in the Golden Hour
IronCase's time-sensitive items focus on:
- Scene security
- Initial notifications
- Witness identification
- Preliminary documentation
- Evidence preservation
None of this is busywork. Each item exists because missing it has cost cases.
Role-Based Workflows
Investigations involve multiple roles, each with specific responsibilities. IronCase's checklists reflect this reality.
First Officer
The first responder sets the foundation. Their responsibilities:
- Scene safety and security
- Life/death determination
- Initial preservation
- Basic documentation
- Notifications
First Officers don't investigate—they preserve and hand off.
Detective
Lead investigators drive the case. Their responsibilities:
- Accept scene from First Officer
- Direct processing
- Conduct interviews
- Develop leads
- Prepare for prosecution
Detectives need the First Officer's groundwork.
Supervisor
Supervisors ensure quality and provide resources. Their responsibilities:
- Oversight and approval
- Resource allocation
- Quality control
- Policy compliance
- Team coordination
No role operates in isolation. IronCase's handoffs reflect how investigations actually flow.
Beyond Homicide
While Geberth focuses on homicide, the same principles apply to other serious investigations:
Adapting the Methodology
| Case Type | Methodology Adaptation |
|---|---|
| Suspicious Death | Full Geberth until manner determined |
| Officer-Involved Shooting | OIS protocols layered on Geberth base |
| SIDS/Infant Death | Specialized death scene investigation |
| Fatal Fire | Fire investigation integrated |
| Major Crimes | Core principles, adapted checklists |
The systematic approach—document, preserve, follow leads—works across investigation types.
Why Checklists Work
Research from fields like aviation and medicine shows that checklists:
Prevent omissions. Even experts forget steps under pressure.
Standardize quality. Every investigation gets the same foundation.
Enable handoffs. Others can see what's been done.
Support training. New investigators learn the complete process.
Document compliance. Proof that procedures were followed.
Checklists Don't Replace Judgment
IronCase's checklists ensure you don't miss steps. They don't tell you how to interpret evidence or who to suspect.
The checklist handles the routine so you can focus on judgment.
Continuous Improvement
Methodologies evolve. Geberth's work has been updated multiple times. IronCase's checklists can be configured by departments to reflect:
- Local policy requirements
- State-specific procedures
- Lessons from case reviews
- New investigative techniques
The methodology is a foundation, not a straitjacket.
Summary
IronCase's approach to investigation is built on:
- Geberth methodology — The gold standard for death investigation
- Golden Hour focus — Time-sensitive items prioritized
- Role-based workflows — Each role has appropriate items
- Adaptability — Applies to multiple investigation types
- Checklist discipline — Systematic approach prevents omissions
The methodology exists because it works. IronCase makes it easy to follow.