Phillip Cabot Lloyd Martin

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Above Images: Martin, circa 1993


Vital Statistics at Time of Disappearance

  • Missing Since: September 30, 1993 from Stockton, California
  • Classification: Endangered Missing
  • Date of Birth: January 8, 1946
  • Age: 47 years old
  • Height and Weight: 5'11, 165 pounds
  • Distinguishing Characteristics: Caucasian male. Brown hair, brown eyes.
  • Medical Conditions: Martin has a history of drug abuse.
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    Details of Disappearance

    Martin was last seen in north Stockton, California on September 30, 1993. He failed to pick up his daughters from school that day and has never been heard from again. Martin was transient at the time of his disappearance, working as a carpenter and construction laborer and living in his car, a gold 1987 Chevrolet Celebrity. He was reported missing on October 11, 1993.

    Wesley Howard Shermantine Jr. is a possible suspect in Martin's disappearance. He and Loren Joseph Herzog, the so-called "Speed Freak Killers," were arrested in 2000 and ultimately convicted of murdering several females in the 1980s and 1990s; authorities believe they had as many as fifteen victims. Photographs of both men are posted below this case summary. Shermantine is on death row. Herzog's sentence was reduced from 78 years to 14 years after the court ruled his confession had been coerced. He was paroled in 2010 and then committed suicide in January 2012, after he found out his former partner had begun cooperating with authorities and had offered to reveal the location of victims' bodies in exchange for a payment of $33,000.

    Shermantine led investigators to the skeletal remains of Chevelle Wheeler and Cyndi Vanderheiden, who'd been missing since 1985 and 1998 respectively. He also pointed out an abandoned well in Linden, California that contained some 300 human bones and personal items. Shermantine stated the well contains up to twenty victims, Garecht being one of those. He blames Herzog for all the murders and says he only helped with disposing the bodies. Authorities are in the process of sorting out the contents of the well and attempting to identify the bones.

    Martin's daughter stated her father had worked with Shermantine, and as a child she picked him out of a photo lineup. His daughter said she believed Martin, Shermantine and Herzog used drugs together. Shermantine and Herzog are being investigated in other missing persons' cases, including Ruth Leamon, Michaela Garecht, Susan Bender, Sylvia Standly. Victims Kimberly Billy, a 19-year-old who disappeared in 1984, and Joann Hobson, a 16-year-old who disappeared in 1985, have already been identified.

    Martin's case remains unsolved. Foul play is suspected.

    Shermantine Herzog
    Left: Wesley Shermantine; Right: Loren Herzog


    Investigating Agency
    If you have any information concerning this case, please contact:
    San Joaquin County Sheriff's Department


    Source Information
    San Joaquin County Sheriff's Department
    California Governor's Office
    The Stockton Record
    California Attorney General's Office
    Fox CT


    Updated 4 times since October 12, 2004.

    Last updated July 1, 2013; two pictures and medical conditions added, details of disappearance updated.

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