In spring 1973, 15-year-old Kathy Sue Miller of Seattle answered a help-wanted ad and left home on May 1 for an apparent job interview at a service station. She never returned. About a month later her body was found in a wooded area near Tulalip, north of Everett. Medical examiners determined she died of multiple skull fractures caused by a hammer blow.

Investigators focused on Harvey Carignan, the man who placed the newspaper ad and leased the station where Kathy was to be interviewed. Carignan had a documented history of violent attacks on women, and his connection to the ad and location made him the prime suspect. The case against him in Kathy’s death was described as circumstantial, and prosecutors lacked direct physical evidence to charge him in this murder.

Carignan was later convicted for other violent crimes and spent the rest of his life in prison, but no charge was brought in Kathy Sue Miller’s case. Does anyone have memories, documents, or new information about Kathy’s last day or the service station ad that could help reopen questions about what happened?