Harvey Dubs, 30, his wife Deborah, and their 16-month-old son Sean were last seen on July 25, 1984, at their San Francisco apartment after Harvey placed an ad to sell video equipment. Two men responded to the ad and visited the family that day; after Deborah ended a phone call to greet the visitors, the family was never heard from again. A neighbor reported seeing an Asian man leave the apartment carrying a box later that day, and another vehicle was seen driving away the next day.

Investigators later linked the disappearance to Leonard Lake and Charles Ng. Evidence recovered at Lake’s Wilseyville compound included a receipt in Harvey’s name. Lake was arrested in 1985 and died by suicide in custody; Ng was captured in Canada and was later convicted of multiple murders. Remains of other victims were found at the compound, but the Dubs family’s bodies were never recovered and their disappearance remains unresolved.

Did anyone in San Francisco in July 1984 see the Dubs family, the vehicle that left their building, or the men who answered the ad for video equipment?