Partially Solved January–April 1976 Multiple Homicide

The Gypsy Hill Killings

Five young women and girls were murdered in San Mateo County, California, during early 1976 in a series of brutal crimes that terrorized the Bay Area. Decades later, DNA linked career criminal Rodney Halbower to two of the killings, for which he was convicted in 2018; a separate man was convicted in one of the other murders. The remaining cases are still partially unsolved.

Status
Partially Solved
Date
January–April 1976
Location
San Mateo County, California
Victims
Female
Decade
1970s
Where the case stands
  1. Open
  2. Partly resolvedPartially Solved
  3. Charges or trial
  4. Closed

Part of the case has been resolved; significant questions remain open.

Timeline to scale
Each dot is a dated event below; the distance between dots is elapsed time. The darker dot marks the incident.
January 1976: Veronica Cascio, 18, is found stabbed to death at Sharp Park Golf Course in Pacifica.February 1976: Paula Baxter, 17, disappears and is found dead in Millbrae, sexually assaulted and beaten.April 1976: Denise Lampe, 19, is stabbed to death in her car at Serramonte Center in Daly City.2014: DNA evidence links career criminal Rodney Halbower to the killings; he is named a person of interest.January 2015: Halbower is charged with the murders of Cascio and Baxter and extradited from Oregon to California.November 2017: Leon Seymour is charged in the separate murder of Denise Lampe based on DNA evidence.September–October 2018: Halbower is convicted of both murders and sentenced to two consecutive life terms without parole.19762018202651 years since the incident
California
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The Gypsy Hill killings were a series of five murders of young women and girls in San Mateo County, California, in the first months of 1976. The victims were found in and around Pacifica, Millbrae, and Daly City, several of them stabbed many times, and the killings spread fear across the San Francisco Peninsula. The name derives from the Gypsy Hills area near San Bruno, where one victim's body was recovered. For decades the murders went unsolved, and it was long uncertain whether one person or several were responsible. The killings came at a time before DNA testing existed, when investigators had to rely on witness accounts, physical patterns, and painstaking record-keeping, and the files sat largely dormant for years.

The victims were Veronica "Ronnie" Cascio, 18, found stabbed roughly thirty times at Sharp Park Golf Course in Pacifica in January 1976; Paula Louise Baxter, 17, who vanished in early February and was found days later in Millbrae, stabbed, sexually assaulted, and struck with a concrete block; Tatiana "Tanya" Blackwell, 14, whose body was discovered that June; Carol Lee Booth, 26, found in a shallow grave near Colma Creek in South San Francisco; and Denise Lampe, 19, who was stabbed some twenty times in her car in a Serramonte Center parking lot in Daly City in April 1976.

The breakthrough came in 2014, when the FBI and local authorities, re-examining DNA evidence connected to a Reno murder, developed a genetic link to Rodney Halbower, a career criminal already imprisoned in Oregon for attempted murder. Halbower was named a person of interest in September 2014 and charged in January 2015 with the murders of Cascio and Baxter. He was extradited to California, and in September 2018 a San Mateo County jury — after deliberating little more than an hour — convicted him of both killings. In October 2018 he was sentenced to two consecutive terms of life without parole. Investigators also believe Halbower was responsible for the deaths of Blackwell and Booth, though he was not charged in those cases.

The case is considered only partially solved because the five killings were not all the work of one man. DNA evidence in the murder of Denise Lampe pointed to a different perpetrator, Leon Melvin Seymour, who was charged in November 2017 and later convicted of her killing. Halbower's case also carried a further legal consequence: the DNA work helped exonerate Cathy Woods, a woman who had been wrongfully convicted of the related 1976 Reno murder of Michelle Mitchell. Together, the convictions of Halbower and Seymour resolved most of the Gypsy Hill killings after more than forty years, though not every detail of the 1976 crime spree has been fully accounted for.

serial killerDNA1970s
  1. January 1976
    Veronica Cascio, 18, is found stabbed to death at Sharp Park Golf Course in Pacifica.
  2. February 1976
    Paula Baxter, 17, disappears and is found dead in Millbrae, sexually assaulted and beaten.
  3. April 1976
    Denise Lampe, 19, is stabbed to death in her car at Serramonte Center in Daly City.
  4. 2014
    DNA evidence links career criminal Rodney Halbower to the killings; he is named a person of interest.
  5. January 2015
    Halbower is charged with the murders of Cascio and Baxter and extradited from Oregon to California.
  6. November 2017
    Leon Seymour is charged in the separate murder of Denise Lampe based on DNA evidence.
  7. September–October 2018
    Halbower is convicted of both murders and sentenced to two consecutive life terms without parole.

Have information about this case?

Cold cases are solved when someone comes forward. Even a detail that seems minor can matter. Contact law enforcement through one of these channels:

  • FBI Tips (tips.fbi.gov): submit a tip online to the Federal Bureau of Investigation
  • FBI tip line: 1-800-CALL-FBI (1-800-225-5324)
  • The police force or sheriff's office responsible for San Mateo County

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Entry last updated September 29, 2026.