Francine Marie Trimble, 14, and her friend Kerry Ann Graham, 15, disappeared from Forestville, California, on December 16, 1978. The girls were neighbors and reportedly planned to visit the Coddingtown Mall in Santa Rosa that day; neither was heard from again. Trimble’s mother filed a missing persons report within 24 hours and Graham’s disappearance was reported on December 24.

On July 8, 1979, remains were found about 80 miles north of Forestville in remote woodland near Highway 20 close to Willits. The bodies were concealed in duct-taped garbage bags and buried in an embankment. Advanced decomposition prevented a specific cause of death from being determined, but the deaths were classified as homicides; Graham’s remains were initially misidentified as male until later confirmed by DNA. DNA profiling in November 2015 finally identified both victims as Trimble and Graham.

No arrests or public suspect identifications have been announced. Investigators noted no signs of a struggle at either home and that neither girl took personal belongings, which has led to the view their disappearance was not planned. Does anyone with memories of Forestville or the girls in 1978 have information that could help bring clarity to this long-unsolved case?