206 Cases Solved. Advancing justice for missing persons, unsolved homicides, unidentified and unclaimed remains.
⚠️ Warning: Viewer Discretion Advised ⚠️ The following section contains detailed information about serial killers, their crimes, and case details. Some content may be disturbing or graphic, including descriptions of violence, criminal behavior, and sensitive subject matter.
Description
See any errors? Let us know!

Robert Leroy Biehler: A Detailed Account of His Crimes

Early Criminal Activities

Robert Leroy Biehler's criminal history began on February 25, 1956, when he, along with Louis Evangelisti and Kay G. Mills, broke into the Pasadena home of Paul and Marguerite Troutner. The trio threatened the couple, tied them up, and stole $1,500 in cash and valuables. Their subsequent arrest led to short prison sentences for each. After his release in the late 1950s, Biehler engaged in various crimes, including a 1960 bank burglary in which he and his associates stole $10,000. This crime resulted in another prison term at the California Institution for Men, from which he was paroled in August 1966.

Escalation to Murder

On December 22, 1966, fearing exposure of his involvement in a prostitution ring, Biehler murdered Julia Cook and her 15-year-old son, Kenneth, in their North Hollywood home. Despite initial arrests, lack of evidence led to the release of Biehler and his acquaintance, Morton Molin. Biehler was subsequently jailed for parole violations.

Further Killings

After his early 1970s parole, Biehler resumed criminal activities. On October 14, 1973, he killed Michael Rodney Coveny over a missed drug debt, burying the body in Angeles National Forest. Approximately a year later, he was hired by Maida Sue Ellington to murder her roommate, Carole E. Phillips. Biehler's initial attempt left Phillips injured but alive. He succeeded in killing her on December 24, 1974, shooting her multiple times in North Hollywood. ...Read More
Victims
See any mistakes? Let us know!
Confirmed Victims: (4)
  • Julia Cook Age: (38), Date of Death: 1966-12-22
  •     ...View 3 additional victims
    Survivors:
  • Paul Troutner , Date of Attack: 1956-02-25
  • Marguerite Troutner , Date of Attack: 1956-02-25
  • Links to Additional Sources (9)
    See any mistakes? Let us know!
    Killer's Details

    Robert Leroy

    Biehler

    August 5, 1934 Chase, Kansas, United States

    January 10, 1993 (aged 58) San Quentin, California, United States

    Cancer

    Male

    White

    First degree murder (x4)

    Life imprisonment

    4

    1966 - 1973

    California

    December 12, 1975

    San Quentin State Prison — San Quentin, California

    07/03/2025