Zodiac Killer Investigation
Serial Homicide · Northern California · 1968–1969
Case Overview
Objective
Identify the Zodiac Killer through genealogical DNA analysis, cipher decryption, and systematic review of the 2025 FBI dossier release.
Synopsis
Unidentified killer responsible for at least five confirmed murders across Northern California. The killer taunted police and media with coded letters. The 340-character cipher was decoded in 2020; the 13-character cipher remains unsolved.
Current Research Angle
Genealogical DNA search status. 2025 FBI dossier review. Cipher analysis.
Research Tasks
5 tasks- 01Review 2025 FBI dossier release for new forensic leads
- 02Map genealogical DNA submission status against known databases
- 03Analyze the 13-character cipher using modern cryptographic tools
- 04Cross-reference Zodiac letter postmarks with suspect timelines
- 05Document all confirmed vs. claimed victims with source citations
Evidence Files
6 files- Zodiac Letters — TranscriptsDocument
- 340-Cipher Decoded Analysis (2020)Analysis
- Partial DNA Profile — Envelope LeavingsForensic
- Victim Timeline MapTimeline
- FBI 2025 Dossier SummaryDocument
- Suspect Composite SketchesImage
FOIA Requests
- FBI — San Francisco Field OfficeSubmitted
- SFPD Cold Case UnitPending
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Case Stats
- Research Tasks
- 5
- Evidence Files
- 6
- Entities
- 2
- Status
- Open
- Prosecution
- None