206 Cases Solved. Advancing justice for missing persons, unsolved homicides, unidentified and unclaimed remains.
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Description
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Michael Tenneson: A Detailed Account of His Crimes

Early Life and Background

Michael Tenneson was born on November 21, 1959, in Holmen, Wisconsin. Details about his early life are limited, but his later actions would mark him as a notorious figure in criminal history.

The 1987 Wisconsin Murders

On a fateful night in 1987, in La Crosse, Wisconsin, Tenneson committed a brutal triple homicide. The victims were:
  • Lila Bush, 73 years old, murdered on March 20, 1988.
  • Kenneth Bush, 33 years old, murdered on March 20, 1988.
  • Debra Reget, 35 years old, murdered on March 20, 1988.
These individuals were tragically killed during a break-in orchestrated by Tenneson.

Flight and Further Crimes in Colorado

After the Wisconsin murders, Tenneson fled to Colorado. There, he continued his violent spree, committing two additional murders during a poker game. The victims were:
  • Jeffrey Sheffield, 23 years old, murdered on May 20, 1988.
  • Mitchell Gonzales, 22 years old, murdered on May 20, 1988.
These crimes further solidified Tenneson's reputation as a dangerous individual. ...Read More
Victims
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Confirmed Victims: (5)
  • Lila Bush Age: (73), Date of Death: 1998-03-20
  •     ...View 4 additional victims
    Killer's Details

    Michael

    Tenneson

    November 21, 1959 (age 65) Holmen, Wisconsin, United States

    Michael Leith

    Male

    White

    Murder

    Life imprisonment

    5

    1988

    Wisconsin, Colorado

    1988

    07/11/2025