Zodiac Killer
E349904
The Zodiac Killer is an unidentified American serial killer who terrorized Northern California in the late 1960s and early 1970s, taunting police and media with cryptic letters and ciphers.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Zodiac Killer canonical | 3 |
| Arthur Leigh Allen is Zodiac Killer | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3341858 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Zodiac Killer Context triple: [Zodiac, subject, Zodiac Killer]
-
A.
Francis Dolarhyde
Francis Dolarhyde is the fictional serial killer known as "The Tooth Fairy" in Thomas Harris's novel *Red Dragon* and its screen adaptations.
-
B.
The Boston Strangler
The Boston Strangler is a 1968 crime thriller film dramatizing the real-life case of a notorious serial killer who terrorized Boston in the early 1960s.
-
C.
Manson Family murders
The Manson Family murders were a series of brutal killings in Los Angeles in 1969 orchestrated by cult leader Charles Manson, which became one of the most infamous crimes in American history.
-
D.
Gabriel Harris
Gabriel Harris is an American percussionist and musician best known for his work with his mother, folk singer and activist Joan Baez, as well as other world and folk music artists.
-
E.
Buffalo Bill (Jame Gumb)
Buffalo Bill (Jame Gumb) is the fictional serial killer and primary antagonist in Thomas Harris's novel and its film adaptation "The Silence of the Lambs," known for his gruesome crimes that drive the story's investigation.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Zodiac Killer Target entity description: The Zodiac Killer is an unidentified American serial killer who terrorized Northern California in the late 1960s and early 1970s, taunting police and media with cryptic letters and ciphers.
-
A.
Francis Dolarhyde
Francis Dolarhyde is the fictional serial killer known as "The Tooth Fairy" in Thomas Harris's novel *Red Dragon* and its screen adaptations.
-
B.
The Boston Strangler
The Boston Strangler is a 1968 crime thriller film dramatizing the real-life case of a notorious serial killer who terrorized Boston in the early 1960s.
-
C.
Manson Family murders
The Manson Family murders were a series of brutal killings in Los Angeles in 1969 orchestrated by cult leader Charles Manson, which became one of the most infamous crimes in American history.
-
D.
Gabriel Harris
Gabriel Harris is an American percussionist and musician best known for his work with his mother, folk singer and activist Joan Baez, as well as other world and folk music artists.
-
E.
Buffalo Bill (Jame Gumb)
Buffalo Bill (Jame Gumb) is the fictional serial killer and primary antagonist in Thomas Harris's novel and its film adaptation "The Silence of the Lambs," known for his gruesome crimes that drive the story's investigation.
- F. None of above. chosen
Statements (53)
| Predicate | Object |
|---|---|
| instanceOf |
American serial killer
ⓘ
criminal pseudonym ⓘ unidentified serial killer ⓘ |
| activePeriodEnd | early 1970s ⓘ |
| activePeriodStart | late 1960s ⓘ |
| areaOfActivity | Northern California ⓘ |
| caseStatus | unsolved ⓘ |
| cipherStatus | some ciphers solved, some unsolved ⓘ |
| claimedResponsibilityFor | multiple murders in Northern California ⓘ |
| claimedVictimCount | 37 ⓘ |
| communicationMethod |
coded messages
ⓘ
handwritten letters ⓘ |
| confirmedVictimCount | 5 ⓘ |
| countryOfActivity |
United States of America
ⓘ
surface form:
United States
|
| culturalImpact | one of the most infamous unidentified serial killers in American history ⓘ |
| inspiredWork |
film "Zodiac" (2007)
ⓘ
numerous books and documentaries ⓘ |
| investigationStatus | identity unknown ⓘ |
| knownFor |
sending taunting letters to newspapers
ⓘ
series of unsolved murders ⓘ use of cryptograms and ciphers ⓘ |
| mediaCoverage | extensive newspaper coverage in late 1960s ⓘ |
| modusOperandi |
attacking couples in secluded areas
ⓘ
shooting victims with firearms ⓘ stabbing victims with a knife ⓘ taunting police and media ⓘ |
| notableAttackLocation |
Blue Rock Springs Park, Vallejo, California
ⓘ
Lake Berryessa ⓘ
surface form:
Lake Berryessa, Napa County, California
Lake Herman Road, Benicia, California ⓘ Presidio Heights, San Francisco, California ⓘ |
| notableCipher |
Z-13 cipher
ⓘ
Z-32 cipher ⓘ Z-340 cipher ⓘ Z-408 cipher ⓘ |
| notableVictim |
Betty Lou Jensen
ⓘ
Cecelia Shepard ⓘ Darlene Ferrin NERFINISHED ⓘ David Faraday ⓘ Paul Stine ⓘ |
| policeJurisdictionsInvolved |
Napa County Sheriff’s Office
ⓘ
San Francisco Police Department ⓘ Vallejo Police Department ⓘ |
| selfGivenName | Zodiac ⓘ |
| sentLettersTo |
San Francisco Chronicle
ⓘ
San Francisco Examiner ⓘ Vallejo Times-Herald ⓘ |
| signatureSymbol | crosshair-like circle and cross symbol ⓘ |
| suspectedVictimCount | 7 ⓘ |
| threatenedTarget | school children in letters ⓘ |
| usedLanguage | English ⓘ |
| usedWeapon |
.22 caliber handgun
ⓘ
9mm handgun ⓘ knife ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Zodiac Killer Description of subject: The Zodiac Killer is an unidentified American serial killer who terrorized Northern California in the late 1960s and early 1970s, taunting police and media with cryptic letters and ciphers.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Arthur Leigh Allen is Zodiac Killer