Annette Anderson was 11 when she and her 6-year-old sister Mylette vanished from their Jacksonville, Florida, home on August 1, 1974. The girls had been left alone at about 6 p.m. while their mother and older sister went to care for a sick relative. Their father called at 7 p.m. and spoke with them; a second call at 7:20 p.m. went unanswered. When he returned home he found the children gone and the family dog locked in a bedroom. Neighbors reported seeing a white car in the driveway around that time, but no one saw anything they described as suspicious. Only Mylette’s favorite doll was missing from the house.

The disappearances drew attention amid a string of similar cases in Jacksonville that year. Serial killer Paul John Knowles later claimed responsibility for abducting and killing the Anderson sisters, but investigators found no evidence to support his confession and now regard it as likely false. Extensive searches turned up no trace of the girls, and both parents died without learning what happened. The investigation remains open and authorities continue to seek new information.

Did anyone in Jacksonville in 1974 know the Anderson family or remember a white car in that neighborhood on August 1?