Mary Francis Sims, a 31-year-old Miami housewife, was found dead in her home in March 1971 after her husband discovered her lifeless on their bed. The scene was brutal: she had been sexually assaulted, strangled, and stabbed in the throat. Investigators described the combination of sexual assault and stabbing as particularly vicious.

Detectives noted strong similarities between her killing and a series of unsolved Miami-area murders attributed to an unidentified offender called the Miami Strangler, a suspect linked to at least nine women killed between 1964 and 1970. Many victims were white women attacked in their homes, and methods in the earlier cases included strangulation, bludgeoning, and smothering, sometimes with sexual motivation. Because of those parallels, Sims was considered a possible tenth victim.

One man, Calvin Jones Jr., a truck driver with a criminal history who knew at least one confirmed victim and had been seen near another crime scene, was questioned in connection with the wider string of killings but was never charged in Sims’s death. No arrest has been announced in her murder.

Did anyone in Miami at that time know Mary Francis Sims or have information about visitors to her home in early 1971?