207 Cases Solved. Advancing justice for missing persons, unsolved homicides, unidentified and unclaimed remains.
Case Description
Any updates on this case? Let us know!
Diane Wilder, a 27-year-old Caucasian woman, was tragically murdered on January 11, 1979, in Bellingham, Washington. Diane, along with her friend Karen Mandic, was last seen alive when they went to check out a potential house-sitting job. The contact for this job was Kenneth Bianchi, who would later be identified as one of the infamous Hillside Stranglers. Bianchi, who had moved to Bellingham and found work as a security guard, lured the two women to their deaths. Diane and Karen were raped and ...Read More
Victim Details

Diane Wilder

Female

White / Caucasian

Los Angeles

CA

1979-01-11

27

Diane

Wilder

11/19/2025