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Mark Harrison Sheer

Death by Force
Case Description
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Mark Harrison Sheer, aged 55, tragically died on May 26, 2014, in Mission Viejo, California. The incident was part of a devastating murder-suicide that shocked the local community. On May 27, 2014, authorities discovered the bodies of Mark Sheer, his wife Lydia Ann Sheer (54), their son Michael Harrison Davis Sheer (21), and their daughter Amy Joanne Sheer (15) inside their home on Pacific Hills Drive. The discovery was made by a relative who immediately contacted the authorities.

Investi ...Read More
Links to Additional Sources (9)
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  • latimes.com: Family identified in Mission Viejo murder-suicide
  • OC Weekly: Michael Sheer, 21, Suspected of Having Fatally Shot His Father, Mother, Sister and Self: Update
    •     ...View 7 additional sources
    Victim Details

    Mark Harrison Sheer

    Male

    White / Caucasian

    Mission-viejo

    CA

    2014-05-26

    55

    Mark

    Harrison Sheer

    11/20/2025

    Forum Posts (2)
    I've been thinking a lot about Mark Sheer and how deeply involved he was with his church and communi... ...Read More
    12/25/2024
    I came across this case and just can't stop thinking about the Sheer family. I live fairly close to ... ...Read More
    07/12/2023
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