criminal-case-analyzer
Criminal Case Analyzer Skill
Skill Metadata
- Skill ID: criminal_case_analyzer
- Version: 1.0.0
- Domain: Criminal Law (India)
- Specialization: Systematic case analysis, strategy development
- Dependencies: All 28 criminal law protocols
- Effective Date: January 2025
Skill Purpose
Reusable analytical capability for systematic criminal case analysis, providing structured evaluation of:
- Fact patterns and timelines
- Applicable offences and ingredients
- Evidence strength and admissibility
- Burden of proof allocation
- Defense and prosecution strategies
- Risk assessment and recommendations
Input Parameters
Required Inputs:
- Case Facts: Detailed narrative of what happened
- Date of Incident: Determines IPC vs BNS applicability
- Perspective: Defense or Prosecution
- Current Stage: FIR, investigation, arrest, trial, appeal
Optional Inputs:
- Evidence Available: Witness statements, documents, forensic reports
- Accused Details: Background, antecedents, personal circumstances
- Specific Questions: Targeted issues to address
Analysis Framework
Phase 1: Fact Analysis and Organization
Objective: Extract and structure key facts
Process:
1. **Chronological Timeline**:
- When did each event occur?
- Sequence of events leading to offence
- Post-offence actions
2. **Actor Identification**:
- Victim(s): Name, age, relationship to accused
- Accused: Name, age, occupation, antecedents
- Witnesses: Eyewitnesses, formal witnesses (police, doctor)
- Third parties: Any other relevant persons
3. **Location Analysis**:
- Where did offence occur?
- Jurisdiction (determines police station, court)
- Public vs private place (may affect offence classification)
4. **Actus Reus (Physical Act)**:
- What physical act was committed?
- How was it committed? (Weapon? Force? Deception?)
- What was the result? (Death, injury, loss)
5. **Mens Rea (Mental State)**:
- Intention to commit act?
- Knowledge of consequences?
- Negligence or recklessness?
- Premeditation vs sudden provocation?
6. **Motive**:
- Why did accused commit act? (Relevant but not essential)
- Strengthens prosecution case if established
Output: Structured fact summary with timeline, actors, actus reus, mens rea
Phase 2: Offence Identification
Objective: Identify all applicable offences
Process:
1. **Determine Applicable Law**:
- If offence occurred BEFORE July 1, 2024: Use IPC 1860
- If offence occurred ON OR AFTER July 1, 2024: Use BNS 2023
- Read IL-CRIM-IPC-BNS-TRANSITION.md for mapping
2. **Primary Offence Analysis**:
- Based on actus reus and mens rea, identify main offence
- Examples:
- Death caused + intention → Murder (IPC 302 / BNS 103)
- Death caused + knowledge but no intention → Culpable homicide not amounting to murder (IPC 304 / BNS 105)
- Sexual assault → Rape (IPC 376 / BNS 64-71)
- Property taken + force → Robbery (IPC 392 / BNS 309)
3. **Related Offences**:
- Identify all additional offences committed
- Example: Rape case may include:
- Rape (IPC 376 / BNS 64)
- Criminal intimidation (IPC 506 / BNS 351)
- Wrongful confinement (IPC 342 / BNS 127)
4. **Essential Ingredients Check**:
- For each identified offence, list essential ingredients
- Read relevant protocol (e.g., IL-CRIM-MURDER.md)
- Extract ingredients from protocol
5. **Fact-to-Ingredient Mapping**:
- Map available facts to each ingredient
- Identify which ingredients are established
- Identify gaps or weaknesses
Output: List of applicable offences with ingredients and fact mapping
Phase 3: Evidence Evaluation
Objective: Assess strength and admissibility of evidence
Process:
1. **Evidence Categorization**:
**A. Oral Evidence**:
- Eyewitness testimony
- Victim statement
- Expert opinion (doctor, FSL)
- Character evidence
**B. Documentary Evidence**:
- FIR copy
- Dying declaration
- Medical reports
- Contracts, letters (in fraud/cheating cases)
**C. Electronic Evidence**:
- WhatsApp messages
- CCTV footage
- Call detail records (CDR)
- GPS data
- Social media posts
**D. Physical Evidence**:
- Weapon (murder weapon, knife)
- Stolen goods (theft/robbery cases)
- Fingerprints, DNA
- Blood-stained clothes
2. **Admissibility Analysis** (Use IL-CRIM-EVIDENCE-ADMISSIBILITY.md):
For each piece of evidence:
**Step 1: Relevancy** (Section 5 Evidence Act/BSA)
- Is it fact in issue or relevant fact?
- If not relevant → INADMISSIBLE
**Step 2: Hearsay Check** (Section 60)
- Is witness testifying to what they personally saw/heard?
- OR is it hearsay (heard from someone else)?
- If hearsay → Check exceptions (dying declaration, admission, etc.)
**Step 3: Electronic Evidence** (Section 65B)
- If electronic → Section 65B certificate required (Anvar P.V. case)
- Without certificate → INADMISSIBLE
**Step 4: Confession Check** (Sections 24-30)
- Confession to police → ALWAYS INADMISSIBLE (Section 25)
- Confession before Magistrate (Section 164) → Admissible if voluntary
**Step 5: Primary vs Secondary** (Sections 62-65)
- Original document (primary) preferred
- Photocopy (secondary) only if original unavailable (Section 65)
3. **Strength Assessment**:
**Direct Evidence**:
- Eyewitness saw accused commit crime → Strong if credible
- Check witness credibility: Interested witness? Related? Contradictions?
**Circumstantial Evidence**:
- No direct evidence, only circumstances (motive, opportunity, recovery)
- Apply Panchsheel Principles (Sharad Sarda case):
1. Circumstances fully established?
2. Consistent only with guilt?
3. Conclusive nature?
4. Exclude every hypothesis except guilt?
5. Chain complete (no missing link)?
- If any principle fails → Weak circumstantial case
**Corroboration**:
- Single witness enough? OR corroboration needed?
- Dying declaration: Can be sole basis if truthful (Laxman case)
- Sexual assault: Victim testimony sufficient; no corroboration required
4. **Chain of Custody** (Physical Evidence):
- Seizure → Sealing → FSL → Court production
- Any break in chain → Evidence may be unreliable
Output: Evidence inventory with admissibility status and strength rating
Phase 4: Burden of Proof Analysis
Objective: Determine who must prove what and to what standard
Process (Use IL-CRIM-BURDEN-PROOF.md):
1. **General Rule**:
- **Burden on PROSECUTION** to prove guilt
- **Standard**: BEYOND REASONABLE DOUBT (very high standard)
2. **What Prosecution Must Prove**:
- All essential ingredients of offence
- Actus reus (physical act committed)
- Mens rea (intention/knowledge/negligence)
- Identity of accused
- No general exception applies
3. **Burden on Accused** (Section 105):
- **If accused claims general exception** (self-defense, insanity, mistake, etc.)
- **Standard**: PREPONDERANCE OF PROBABILITIES (balance of probabilities - lower than beyond reasonable doubt)
- Accused need NOT prove beyond reasonable doubt, only show "more likely than not"
4. **Presumptions** (Sections 113A, 113B, 114):
**Section 113A: Abetment of Suicide by Married Woman**:
- If married woman commits suicide within 7 years + husband/relatives subjected her to cruelty
- **Presumption**: Husband/relatives abetted suicide
- **Effect**: Reverse burden on accused
**Section 113B: Dowry Death**:
- If woman dies within 7 years of marriage + cruelty/harassment for dowry proved
- **Presumption**: Husband/relatives caused dowry death
- **Effect**: Reverse burden on accused
5. **Practical Application**:
**Example: Murder with Self-Defense Claim**:
- Prosecution must prove:
1. Accused caused death (beyond reasonable doubt)
2. With intention to cause death (beyond reasonable doubt)
- Accused must prove:
1. Self-defense (preponderance of probabilities)
2. Imminent threat, no retreat, proportionate force
**Example: Dowry Death**:
- Prosecution must prove:
1. Woman died within 7 years of marriage
2. Cruelty/harassment for dowry occurred soon before death
- Then presumption arises under Section 113B
- Accused must rebut presumption (prove innocence)
Output: Burden allocation matrix showing who proves what and to what standard
Phase 5: Strategy Development
Objective: Develop prosecution or defense strategy
A. PROSECUTION STRATEGY
If perspective is Prosecution:
1. **Case Strengths**:
- List strongest evidence
- Direct evidence available?
- Credible witnesses?
- Forensic evidence (DNA, fingerprints)?
2. **Case Weaknesses**:
- Identify gaps
- Missing evidence?
- Witness credibility issues?
- Circumstantial evidence chain incomplete?
3. **Evidence Collection Priority**:
- What additional evidence needed?
- Witnesses not yet examined?
- Forensic tests pending?
- Section 65B certificates obtained?
4. **Anticipated Defenses**:
- What will defense argue?
- Self-defense claim likely?
- Alibi expected?
- Exception under IPC/BNS?
5. **Prosecution Strategy**:
- How to prove each ingredient?
- Witness examination order
- Documentary evidence production plan
- Cross-examination preparation
- Closing argument themes
B. DEFENSE STRATEGY
If perspective is Defense:
1. **Prosecution Weaknesses**:
- Where is prosecution case weak?
- Unreliable witnesses?
- Evidence inadmissible?
- Ingredients not proved?
2. **Defense Options**:
**Option A: Challenge Prosecution Case**:
- Show reasonable doubt
- Highlight contradictions
- Challenge admissibility
- Cross-examination strategy
- NO burden on defense to prove innocence
**Option B: Affirmative Defense (Exception)**:
- Claim general exception (self-defense, insanity, etc.)
- Read IL-CRIM-GENERAL-EXCEPTIONS.md
- Gather evidence to prove exception
- Remember: Burden on accused (Section 105)
- Standard: Preponderance (easier than beyond reasonable doubt)
**Option C: Alibi**:
- Accused was elsewhere when offence occurred
- Alibi witnesses
- Documentary proof (bills, tickets, CCTV)
3. **Cross-Examination Strategy**:
- Identify prosecution witnesses to discredit
- Prepare leading questions
- Confront with prior inconsistent statements (Section 161)
- Show bias/interest
4. **Section 313 Preparation**:
- Anticipate incriminating circumstances to be put
- Prepare coherent explanations
- Right to remain silent vs duty to explain
5. **Defense Evidence**:
- Defense witnesses needed?
- Should accused testify? (Pros and cons)
- Expert evidence to rebut prosecution experts?
Output: Comprehensive strategy document with action items
Phase 6: Risk Assessment
Objective: Identify risks and mitigation strategies
Process:
1. **Legal Risks**:
- What is worst-case outcome?
- Maximum sentence for offences charged?
- Likelihood of conviction based on evidence?
2. **Procedural Risks**:
- Delay in trial?
- Witness turning hostile?
- Evidence degradation (physical evidence)?
3. **Strategic Risks**:
- For Defense: Alibi breaks down under cross-examination?
- For Prosecution: Key witness credibility destroyed?
4. **Mitigation Strategies**:
- How to reduce risks?
- Backup witnesses?
- Alternative defenses?
- Plea bargaining options? (Section 265A-265L CrPC / 290-305 BNSS)
Output: Risk matrix with mitigation plan
Output Format
# CRIMINAL CASE ANALYSIS REPORT
## CASE SUMMARY
[One-paragraph overview]
## FACT ANALYSIS
### Timeline
| Date/Time | Event | Actors Involved |
|-----------|-------|-----------------|
| [Date] | [Event description] | [Actors] |
### Key Facts
- **Victim**: [Details]
- **Accused**: [Details]
- **Actus Reus**: [Physical act]
- **Mens Rea**: [Mental state]
- **Motive**: [If established]
## OFFENCE ANALYSIS
### Applicable Law
- Offence Date: [Date]
- Applicable Statute: [IPC 1860 / BNS 2023]
### Offences Identified
#### Primary Offence: [Offence Name]
**Statutory Provision**: [IPC/BNS Section]
**Punishment**: [Imprisonment + Fine details]
**Essential Ingredients**:
1. [Ingredient 1]
- Status: Established / Not Established / Uncertain
- Evidence: [Supporting evidence]
2. [Ingredient 2]
- Status: [As above]
- Evidence: [As above]
#### Related Offences
- [Offence 2]: [Section]
- [Offence 3]: [Section]
## EVIDENCE EVALUATION
### Evidence Inventory
| Evidence Type | Description | Admissible? | Strength | Notes |
|---------------|-------------|-------------|----------|-------|
| Oral | Eyewitness X | Yes | Strong | Credible, no contradictions |
| Documentary | Medical report | Yes | Strong | Corroborates injury |
| Electronic | WhatsApp msgs | No | N/A | No Section 65B certificate |
| Physical | Murder weapon | Yes | Medium | Chain of custody gap |
### Circumstantial Evidence Analysis
[If applicable, apply Panchsheel Principles]
## BURDEN OF PROOF
### On Prosecution (Beyond Reasonable Doubt)
- [Element 1 to prove]
- [Element 2 to prove]
### On Accused (Preponderance of Probabilities)
- [If exception claimed: Element to prove]
### Presumptions Applicable
- [Section 113A / 113B / etc. if applicable]
## STRATEGY RECOMMENDATIONS
### [For Prosecution / For Defense]
**Strengths**:
- [Strength 1]
- [Strength 2]
**Weaknesses**:
- [Weakness 1]
- [Weakness 2]
**Recommended Approach**:
[Detailed strategy]
**Action Items**:
1. [Action 1 with timeline]
2. [Action 2 with timeline]
## RISK ASSESSMENT
| Risk | Likelihood | Impact | Mitigation |
|------|------------|--------|------------|
| [Risk 1] | High/Medium/Low | High/Medium/Low | [Strategy] |
## NEXT STEPS
1. **Immediate** (0-7 days): [Actions]
2. **Short-term** (1-4 weeks): [Actions]
3. **Long-term** (1-3 months): [Actions]
## PROTOCOL REFERENCES
- [Protocol 1]
- [Protocol 2]
Skill Limitations
- Protocol-Dependent: Analysis quality depends on reading relevant protocols
- Fact-Dependent: Accuracy depends on completeness of facts provided
- Not Legal Advice: This is analytical tool, not substitute for licensed counsel
- India-Specific: Applies only to Indian criminal law
- Current as of January 2025: Laws may change
Integration with Agents
This skill is used by:
- criminal-law-specialist agent: For comprehensive case analysis
- criminal-procedure-expert agent: For procedural strategy
- evidence-analyst agent: For evidence evaluation component
Can be invoked via:
/criminal-law-advicecommand- Direct agent consultation
End of Skill: criminal_case_analyzer