The Zodiac Killer terrorized Northern California in the late 1960s, blending cryptic letters with brutal crimes that still fascinate investigators and the public. Investigators generally identify his first confirmed homicide as the attack on David Faraday and Betty Lou Jensen on December 20, 1968, a night that set the pattern for his anonymous campaign of fear.
The early Lake Herman Road murders encapsulate the blend of opportunism, geography, and failed communication that defined the Zodiac. Understanding that foundational event clarifies how the vigilantes, media, and law enforcement misread the threat in ways that allowed the suspect to remain unidentified for decades.
| Victim | Location | Date | Outcome | Notes |
|---|---|---|---|---|
| David Faraday | Lake Herman Road, Benicia, CA | December 20, 1968 | Fatally shot; female survivor | First confirmed Zodiac killing; male victim died at scene |
| Betty Lou Jensen | Lake Herman Road, Benicia, CA | December 20, 1968 | Died from multiple gunshot wounds | First known female victim; died after the attack |
| Attack method | Vehicle ambush | Evening, dusk | Shootings from a passing car | Used .38 caliber revolver; taunting behavior observed |
| Investigative status | Unsolved | Active review ongoing | >Suspect theory focus on Arthur Leigh Allen | No prosecutions; case remains open in many jurisdictions |
Lake Herman Road Attack Context
The location of the first Zodiac killing, Lake Herman Road, was a secluded lovers’ lane near Lake Herman in Benicia. This setting provided darkness, isolation, and proximity to urban areas, allowing the killer to approach and retreat quickly while minimizing immediate witness opportunities. The geography played a direct role in shaping the tactical approach that would recur in later letters and attacks.
December 20 1968 Timeline
On December 20, 1968, the couple parked on an abandoned stretch of road just after dusk. The killer approached their blue Volkswagen Bug, fired multiple shots, and left the male victim dead while the female survived with injuries. The timing, vehicle details, and weapon choices became key data points in the evolving profile of the Zodiac, setting a template for subsequent communications and crimes.
Investigative Significance
Law enforcement treated the Lake Herman Road shootings as a double homicide initially, but the coded letters and claimed responsibility shifted the case toward serial behavior. The forensic gaps, combined with the theatrical elements of the Zodiac’s communications, complicated linking specific evidence to one individual. Understanding this first event offers insight into the challenges early investigators faced in connecting threats, evidence, and suspects across jurisdictions.
Suspect Profile and Theory
Arthur Leigh Allen emerged as the prime suspect due to witness descriptions, access to weapons, and patterns of behavior aligning with key moments in the Zodiac case. Although never charged in relation to the December 20, 1968 attack, Allen’s history of voyeurism, police encounters, and claimed ties to the killings underscores why he remains the most discussed candidate decades later.
Legacy and Unanswered Questions
The Zodiac’s first kill set a precedent for communication, location selection, and psychological manipulation that persisted throughout the case. Open questions about evidence handling, witness reliability, and the true identity of the shooter continue to drive research and speculation among historians and armchair detectives alike.
- First confirmed Zodiac victim couple: David Faraday and Betty Lou Jensen
- Date and location: December 20, 1968, Lake Herman Road, Benicia, California
- Attack method: ambush shooting with a .38 caliber revolver from a passing vehicle
- Outcome: male victim killed at scene, female survivor injured, case remains unsolved
- Investigative impact: triggered coded letter campaign and cross-jurisdictional scrutiny
FAQ
Reader questions
What exact time did the Zodiac Killer's first attack occur on December 20 1968?
The attack happened after dusk around 6:30 to 7:00 p.m., with darkness aiding the ambush and limiting clear visual identification of the shooter.
How did the Zodiac Killer first contact the police about the Lake Herman Road murders?
The Zodiac claimed credit in a handwritten letter sent to a local newspaper, describing details only the killer or investigators would know, thereby initiating the cryptic correspondence that defined the case.
Were any immediate arrests made following the December 20 1968 shootings?
No arrests were made at the scene, and early leads failed to produce conclusive evidence, partly because the crime scene was compromised and physical evidence was sparse or inconclusive.
What confirmed the connection between the Lake Herman Road attack and later Zodiac letters?
The distinctive style of the ciphers, phrasing, and specific references to the location and weapons in the letters matched elements known only to law enforcement, suggesting the writer was the attacker.