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Derek Harrison

Death by Force
Case Description
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On April 3, 1995, Derek Harrison, a 35-year-old man from Corpus Christi, Texas, tragically lost his life in a mass shooting at the Walter Rossler Co., a refinery inspection firm. The incident occurred when James Simpson, a former employee of the company, walked into the office and methodically shot five people, including Harrison, before taking his own life. The other victims were Walter Rossler , his wife Joann Rossler , Wendy Gilmore , and Richard Tomlinson .

The motive behind the shoo ...Read More
Links to Additional Sources (8)
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  • Los Angeles Times: Ex-Worker Kills 5, Self in Shooting at Texas Company
  • April 3, 1995: A day of infamy for Corpus Christi - KSAT
    •     ...View 6 additional sources
    Victim Details

    Derek Harrison

    Male

    White / Caucasian

    Corpus-christi

    TX

    1995-04-03

    35

    Derek

    Harrison

    11/07/2025

    Forum Posts (3)
    Hi everyone,
    I've been reading through the different threads about the Walter Rossler Co. tragedy... ...Read More
    11/04/2024
    Has anyone else been thinking about the eerie timing of the Walter Rossler Co. shooting happening so... ...Read More
    08/11/2024
    I've been thinking a lot about the Walter Rossler Co. shooting lately, especially about how it impac... ...Read More
    05/22/2023
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