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Mike Riemer

Death by Force
Case Description
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On a cold December day in 1985, 36-year-old Mike Riemer, a White male, vanished from the rugged landscape of Pierce County, Washington, leaving behind a chilling mystery that would endure for decades. On December 12th, Riemer, his 21-year-old girlfriend Diana Robertson, and their two-year-old daughter, Crystal, ventured into the woods. The family outing, intended for finding a Christmas tree and checking Riemer's animal traps, took a dark turn, marking the beginning of a complex and haunting cas ...Read More
Links to Additional Sources (10)
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  • Diana Robertson & Mike Riemer: Terror In The Trees
  • Mike Riemer | Unsolved Mysteries Wiki - Fandom
    •     ...View 8 additional sources
    Victim Details

    Mike Riemer

    Female

    White / Caucasian

    Pierce County

    WA

    1985-12-12

    36

    Mike

    Riemer

    11/09/2025

    Forum Posts (1)
    Has anyone else pondered how little Crystal must have seen or remembered from that fateful day? As t... ...Read More
    02/26/2025
    Other Cases from Pierce County, Washington

    Diana Robertson

    Death: Dec 12, 1985
    On a winter day in 1985, a young Caucasian mother named Diana Robertson, age 21, ventured into the m ...Read More