About This Archive
The Zodiac Archive is a searchable repository of declassified law enforcement documents, investigative case files, and agency records related to the Zodiac Killer — one of the most notorious unsolved serial murder cases in American history. The Zodiac was responsible for at least five confirmed murders in Northern California between December 1968 and October 1969, and taunted investigators through cryptographic letters sent to Bay Area newspapers.
These records are the primary sources — not summaries, not interpretations.
Case files are processed through OCR transcription and structured metadata tagging, making decades-old investigative records fully searchable. The AI Archivist can cross-reference dates, victim names, locations, and cipher content directly against the source documents.
Every document is available in its original scanned form. AI assists discovery — the case files speak for themselves.
The Zodiac Archive is free to access. Your support keeps the archive running, growing, and publicly available.
⚡ Support the ArchiveZodiac Killer Case Files
Browse and search declassified investigative records, law enforcement reports, and agency documents related to the Zodiac Killer — the unidentified serial killer responsible for at least five confirmed murders in Northern California between 1968 and 1969.
Query the Case Files
Ask a question about the Zodiac investigation. Source documents surface first — the AI interpretation is rendered separately, never substituted for primary records.