Herbert Mullin committed thirteen murders across Santa Cruz County between October 1972 and February 1973, driven by a delusional conviction that his actions could avert natural disasters.
Mullin targeted a range of victims during this period, including several young women associated with local colleges. His crimes unfolded against the backdrop of a coastal community already unsettled by the separate activities of Edmund Kemper. The cases share little beyond geography and timing, yet both contributed to Santa Cruz earning an unwelcome reputation in criminological discussions of the era.
Analysis of Mullin’s offences reveals a pattern shaped by acute mental illness rather than any coherent predatory strategy. He selected victims opportunistically, often in remote or semi-rural settings, and showed minimal effort to conceal evidence or evade detection for long.
Background
Herbert William Mullin entered the world in Salinas, California, in 1947. He grew up in a stable middle-class household and displayed above-average intelligence during his school years. By adolescence he began exhibiting signs of schizophrenia, including auditory hallucinations and increasing social withdrawal.
Family members later recalled episodes of erratic behaviour that intensified after the death of a close friend in a car accident. Mullin experimented with drugs and briefly attended college before dropping out. He moved frequently between jobs and addresses, spending time in psychiatric facilities on several occasions without sustained treatment.
By his mid-twenties the combination of untreated psychosis and a growing obsession with environmental omens had taken hold. Mullin came to believe that human sacrifice could prevent catastrophic earthquakes along the San Andreas Fault.
The Crimes
Mullin’s first confirmed killing occurred on 13 October 1972 when he murdered 55-year-old Lawrence White near Santa Cruz. Over the following months he struck repeatedly, claiming additional lives in October, November, December, January and February.
Several victims were young women enrolled at Cabrillo College or the University of California, Santa Cruz. Mary Guilfoyle, aged 20, disappeared while hitchhiking; her remains were later recovered. Other female students fell victim in similar circumstances, their bodies left in wooded areas or along rural roads.
Mullin also killed four members of the Francis family inside their home and murdered a Catholic priest in a church confessional. The attacks showed no consistent sexual motive and varied in method, ranging from blunt force to stabbing.
Victim Selection and Locations
Most incidents took place in or near Santa Cruz County. Mullin sometimes approached victims on foot or by vehicle, choosing isolated spots where resistance would be limited. He rarely transported bodies far, preferring to leave them where they fell.
The geographical spread remained relatively contained, allowing local law enforcement to link several cases once patterns emerged in early 1973.
Investigation and Capture
Santa Cruz police initially treated the deaths as separate incidents. The presence of two active serial offenders in the same small area complicated early efforts. Detectives gradually connected forensic evidence and witness statements pointing to a single perpetrator.
Mullin was arrested on 13 February 1973 after a routine traffic stop revealed bloodstained clothing and a weapon in his possession. He offered little resistance and soon confessed to the full series of killings.
Trial and Conviction
Mullin stood trial in 1973. The defence argued diminished responsibility on grounds of severe mental illness. Prosecutors presented detailed confessions and physical evidence linking him to each scene.
A jury rejected the insanity plea and convicted him on thirteen counts of murder. The court imposed a sentence of life imprisonment with the possibility of parole after seven years, a term later adjusted under California law.
Mullin has remained in custody since that time, housed primarily at facilities for inmates with psychiatric needs.
Psychological Profile
Clinical assessments conducted after arrest confirmed a diagnosis of paranoid schizophrenia. Mullin described elaborate beliefs involving voices that instructed him to kill in order to balance seismic forces. These delusions remained fixed and resistant to medication during initial evaluations.
Experts noted that his actions lacked the organised planning typical of many serial offenders. Instead, they reflected a fractured attempt to impose meaning on internal chaos through external violence.
Legacy
The Mullin case prompted renewed discussion in California about the adequacy of community mental-health services during the 1970s. Families of the victims formed support networks that advocated for improved victim services and better coordination between psychiatric and law-enforcement agencies.
Within true-crime literature the offences receive attention chiefly for their illustration of how untreated psychosis can intersect with lethal outcomes. Santa Cruz itself has long since moved past the immediate shadow of those months, though the events remain part of local historical memory.
Conclusion
Herbert Mullin’s crimes stand as a stark record of mental illness left unaddressed. The thirteen victims, including several young women from the local college community, lost their lives to a delusional system that offered no rational justification. Their names and stories continue to be remembered through official records and quiet community remembrance rather than sensational retellings.
Bibliography
Bugliosi, V. and Gentry, C. (1974) Helter Skelter. New York: W.W. Norton.
Douglas, J. and Olshaker, M. (1995) Mindhunter. New York: Scribner.
Ressler, R. and Shachtman, T. (1992) Whoever Fights Monsters. New York: St. Martin’s Press.
Santa Cruz Sentinel (1973) ‘Series of slayings shocks county’, 15 February.
Schechter, H. (2003) The Serial Killer Files. New York: Ballantine Books.
Sitford, M. (2009) The Santa Cruz Murders. London: Arrow Books.
Vronsky, P. (2004) Serial Killers: The Method and Madness. New York: Berkley Books.
Wilson, C. and Wilson, D. (2007) The World’s Most Evil People. London: Parragon.
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