Today's case covers the solved mass murder of the Ohta family and Dr. Ohta's secretary, Dorothy Cadwallader in 1970. The murders were believed to have been a hippie cult but were quickly linked to a man in Santa Cruz County.
https://www.nydailynews.com/news/crime/crazed-hippy-killer-caused-horror-1970-murder-california-doctor-article-1.369122#:~:text=Crazed%20Hippy%20Killer%20caused%20horror%20with%201970%20murder%20of%20California%20doctor,-By%20MARA%20BOVSUN&text=By%20any%20yardstick%2C%20Dr.,achieving%20the%20rank%20of%20major
https://www.sfweekly.com/news/yesterdays-crimes-santa-cruz-serial-killer-epidemic/
https://en.wikipedia.org/wiki/Frank_Lloyd_Wright
https://www.newspapers.com/clip/1650960/ohta-daughter/
https://murderpedia.org/male.F/f/frazier-john-linley.htm
https://www.sfgate.com/crime/article/Santa-Cruz-mass-murderer-kills-self-in-prison-3221281.php
https://www.newspapers.com/clip/1650960/ohta-daughter/
https://diva.sfsu.edu/collections/sfbatv/bundles/232305