John Riggins and Sabrina Gonsalves Sabrina Gonsalves and John Riggins murder 12/20/1980 Davis, CA *Cold Case Arrest: Convicted sex offender Richard Joseph Hirschfield charged with their murders; faces death penalty* Update: John Riggins and Sabrina Gonsalves murder *Trial of Richard Hirschfield begins* Richard Joseph Hirschfield![]()
