Gypsy Hill killings
Serial Killings
The Gypsy Hill killings were a group of five homicides of young women and girls in San Mateo County, California, during early 1976. The killer became known in the media as the "San Mateo Slasher." It was later proven that there were at least two different perpetrators with Rodney Halbower convicted of the murders of Baxter, Cascio and Michelle Mitchell and Leon Seymour being convicted in the sole murder of Lampe. It is believed Blackwell and Booth were killed by Halbower, but there's no evidence yet to tie him to those cases and Friedman's murder is also unsolved with these killings being partially unresolved.
Killings
On January 8, 1976, the body of 18-year-old Veronica Cascio was discovered in a creek on the grounds of the Sharp Park Golf Course in Pacifica. She had been stabbed 30 times. A transient was arrested but was released for lack of evidence.
A few weeks later, 14-year-old Tatiana Blackwell was reported missing after leaving her home in Pacifica to run an errand. A body, later identified as hers, was discovered off Sharp Park Road in the Gypsy Hills section of the city on June 6. She had also been stabbed multiple times.
Paula Baxter, 17 years old, went missing on Wednesday evening February 4, after finishing a play rehearsal on the Capuchino High School campus, leaving her mired car behind.
This brief starts where responsible research should: with the source description of “Gypsy Hill killings” as serial Killings. Everything that follows is an evidence route, not borrowed authority.
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The subject matters to the general reference register because the source frames it as serial Killings. Its deeper value depends on whether names, dates, institutions and citations support that framing.
Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Sep 7, 2026. The linked authority identifier is Q16983027. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1976.
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This entry incorporates text from “Gypsy Hill killings” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.