206 Cases Solved. Advancing justice for missing persons, unsolved homicides, unidentified and unclaimed remains.
⚠️ Warning: Viewer Discretion Advised ⚠️ The following section contains detailed information about serial killers, their crimes, and case details. Some content may be disturbing or graphic, including descriptions of violence, criminal behavior, and sensitive subject matter.
Description
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John Sapp: A Detailed Account of His Crimes

Early Life and Background

John Sapp, born in 1949 in Concord, California, led a troubled life marked by criminal activities and institutional confinements. By the age of 32, he had spent a significant portion of his life in various state and county institutions, setting the stage for a series of heinous crimes that would span over a decade.

Confirmed Victims

  • John Abono
    • Age: 22
    • Date of Disappearance: December 22, 1975
    • Location: Concord, California
    • Details: Abono disappeared after attempting to purchase marijuana from Sapp. His car was found parked near Sapp's residence, but Abono was never seen again. Sapp later confessed to killing Abono due to disputes over drug deals and personal grievances.
  • Elizabeth Duarte
    • Age: 24
    • Date of Disappearance: 1981
    • Location: Richmond, California
    • Details: Duarte, Sapp's former girlfriend, went missing in 1981. Sapp was initially imprisoned for two years on charges of arson related to burning her home. Her remains were discovered in 1986, revealing she had been shot multiple times in the chest.
  • Robert Weber
    • Age: 35
    • Date of Murder: August 13, 1985
    • Location: Colusa County, California
    • Details: Weber, a minor-scale cocaine dealer indebted to Sapp, was lured under the pretense of a drug deal. His bullet-riddled body was found days later on Walker Ridge, having suffered multiple gunshot wounds.
  • Geraldine Sapp
    • Age: 67
    • Date of Disappearance: 1985
    • Location: Butte County, California
    • Details: Sapp's elderly mother, Geraldine, was last seen in 1985 after Sapp moved in with her. Her skeletal remains were discovered in April 1986. Sapp denied killing her, claiming he avenged her death by killing her alleged murderer.

Investigation and Arrest

In April 1986, while in Grass Valley, Nevada County, California, Sapp was arrested on an outstanding warrant for being a felon in possession of a concealable firearm. Following his arrest, he confessed to the murders of Abono, Duarte, and Weber, providing detailed accounts of each crime. He also led authorities to burial sites and described his methods, which included shootings and disposing of bodies in remote locations. ...Read More
Victims
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Confirmed Victims: (4)
  • John Abono Age: (22), Date of Death: 1975-12-22
  •     ...View 3 additional victims
    Links to Additional Sources (4)
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    Killer's Details

    John

    Sapp

    1949 Concord, California, United States

    Male

    White

    Murder

    Death

    4 - 9+

    1975 - 1986

    California

    1986

    07/03/2025