Seven year old Amber Swartz-Garcia disappeared while jumping rope in her front yard one June afternoon in 1988. Her case has taken many twists and turns, but Amber has never been found.
https://charleyproject.org/case/amber-jean-swartz-garcia
https://www.nbcbayarea.com/news/local/pinole-police-reopen-amber-swartz-garcia-case/1954922/
https://www.nbcsandiego.com/local/break-to-be-announced-in-missing-childs-case/2098617/
https://law.justia.com/cases/california/supreme-court/3d/45/386.html