Mary E. McGreevy

Mary E. McGreevy, a 64-year-old white woman, was known for her independence and reliability. Originally from Scranton, Pennsylvania, she had built a life for herself in Florida, working for years as a respected representative for the William's Cosmetic Company before her retirement. For seven years, she had lived alone in the Clyde Court Hotel apartments at 68 Southeast Second Street in Miami, a residence advertised for its downtown convenience. Friends and clients described her as a person who kept a structured and dependable routine, a woman comfortable in the quiet life she had established for herself in the sun-bleached city.

That routine was abruptly broken in August 1964. When Mary failed to show up for appointments and stopped answering her telephone, those who knew her grew concerned. It was unlike her to be out of touch or to miss a commitment. Their worry led to a grim discovery on August 17, 1964. Inside her own apartment, a place she had called home for nearly a decade, Mary was found dead in her bed. There was no sign of a struggle, no indication of a break-in, and nothing appeared to have been stolen.

The scene that greeted investigators was both intimate and brutal. Mary had not been shot or stabbed; the cause of death was smothering, carried out with a pillow from her own bed. The lack of forced entry and the minimal disturbance at the scene left police with a perplexing puzzle. It suggested either a non-violent entry or that Mary had willingly let her killer into her home, never suspecting the danger. With no weapon left behind, no fingerprints preserved, and no obvious motive like robbery, the investigation was immediately hampered, limited to purely circumstantial evidence.

At the time, the Miami police treated Mary’s death as a single, tragic, and isolated homicide. There was no way for them to know that it was the quiet and unnoticed beginning of a six-year reign of terror that would grip the city in fear. Her murder was the first in a series of at least nine killings that would later be attributed to an unidentified serial predator the press would dub the "Miami Strangler." This phantom attacker haunted the growing metropolis, a city then transitioning from a sleepy southern town to a vibrant, multicultural center.

Over the next several years, the killer struck again and again, preying on women who were often alone in their homes or neighborhoods. The methods varied, from strangulation and bludgeoning to smothering, as in Mary's case. A disturbing signature of the crimes was that while they appeared to be sexually motivated, with victims often left in posed positions, they were not sexually assaulted. The randomness of the attacks and the killer's ability to dissolve back into the city's shadows baffled law enforcement.

Despite extensive investigations over the years, no one was ever arrested or charged for the murder of Mary McGreevy. Police did question a person of interest, a truck driver named Calvin Jones Jr. who had connections to at least two of the other victims, but he was never formally charged in any of the cases. The lack of a consistent modus operandi and the absence of modern forensic technology, like DNA analysis, created insurmountable hurdles for detectives in that era.

Decades later, the case remains cold. The murder of Mary McGreevy is officially unsolved, as are all the killings linked to the Miami Strangler. Her death marked the start of a dark chapter in the city's history, and the identity of the person who ended her peaceful, retired life remains one of Miami's most haunting and enduring mysteries. As of late 2026, her case is an open file, a silent testament to a predator who vanished without a trace.