206 Cases Solved. Advancing justice for missing persons, unsolved homicides, unidentified and unclaimed remains.

Mark Dreibelbis

Death by Force
Case Description
Any updates on this case? Let us know!
Mark Dreibelbis, a 15-year-old boy from Felton, California, tragically lost his life on February 10, 1973. His death was part of a horrific series of murders committed by Herbert Mullin, a notorious serial killer active in the early 1970s. Mullin, who suffered from severe mental illness, believed that his killings were necessary to prevent catastrophic earthquakes. On the day of the murder, Mullin encountered Mark and three other teenage boys—Robert Michael Spector, David Allan Oliker, and Bri ...Read More
Links to Additional Sources (7)
See any mistakes? Let us know!
  • Herbert Mullin - Wikipedia
  • Serial killer who said he killed to ward off earthquakes dies at 75
    •     ...View 5 additional sources
    Victim Details

    Mark Dreibelbis

    Male

    Felton

    CA

    1973-02-10

    15

    Mark

    Dreibelbis

    11/25/2025

    Forum Posts (2)
    It's been nearly 50 years, and I still can't believe what happened to Mark Dreibelbis and those othe... ...Read More
    08/01/2024
    I recently got immersed in the tragic case of Mark Dreibelbis and the other boys who lost their live... ...Read More
    08/18/2023
    Other Cases from Felton, California

    Oliver Waterfall

    Death: Mar 17, 2023
    On April 11, 2023, the body of 24-year-old San Jose resident, Oliver Waterfall, was discovered down n ...Read More

    Michael Gray

    Death: Jan 03, 1983
    Deputy Sheriff Michael A. Gray, aged 40, tragically lost his life on January 13, 1983, after succumb m ...Read More