On the evening of October 3, 1991, 26-year-old Paula Phillips left her apartment in the 6300 block of West 11th Place in Tulsa and told family she was going to the store. She was never seen or heard from again. Her brother Donald, 20, reported her missing on October 7; when investigators went to interview him on October 10 they could not locate him and he, too, had vanished.

A year later, on November 22, 1992, their sister Londa Renee Phillips, 21, was reported missing after failing to arrive at a relative’s home. Authorities have long believed the three disappearances are connected and possibly linked to drug-related activity in Tulsa at the time. Persons of interest have been identified over the years, but no one has been officially named a suspect and no arrests have been announced.

The sequence—Paula’s disappearance, Donald’s report and disappearance days later, then Londa’s disappearance the following year—raises several unanswered questions about timing and contacts in those weeks. If anyone knew Paula, Donald, or Londa, or remembers their movements in October 1991 or November 1992, can you share what you know?