Cold Case Breakthrough: Montauk Mary Identified as Possible Thrill Killer Victim

Sofia Margherita Marrone, who had been known to investigators for nearly fifty years as the Montauk Mary, has finally been identified thanks to advances in DNA analysis. The woman, who survived the Great Depression, disappeared in 1978 and remained an unidentified Jane Doe until Suffolk County authorities revealed her identity this week. Her case is now being examined for a potential connection to the Jersey Shore serial killer known as the Thrill Killer.

Marrone's body was discovered on March 22, 1978, by a U.S. Airman during his lunch break in a park near the eastern end of Montauk in East Hampton, New York. The location, near the Camp Hero radar tower, would later serve as an inspiration for the Netflix series Stranger Things. Investigators determined that she had been shot and killed just hours before her remains were found, a location approximately 250 miles from where she was last seen.

Records indicate that Marrone, a resident of Pleasantville, New Jersey, was last seen leaving a hospital in Somers Point on March 16, 1978. She was killed six days later at East Overlook Park. An autopsy revealed three bullet wounds to her legs and one to her chest. The discovery of her identity was made possible through new DNA methods employed by Suffolk County investigators, who believe she may have been a victim of Richard Biegenwald.

Biegenwald, the Thrill Killer, died in prison in 2008 while serving life sentences for the murders of six people committed between 1958 and 1982. Suffolk County District Attorney Ray Tierney noted that Biegenwald had also been suspected in three other murders. Tierney told reporters that Marrone was killed with the same rare .22-caliber short rounds that police used to identify Biegenwald when he was arrested in 1983. The killer was known to target victims he encountered while walking in towns along the Jersey Shore.

Additional circumstantial evidence supports the link between Marrone and Biegenwald. A witness at the time reported seeing a bearded man sitting in a gold-colored car with New Jersey plates near the park where Marrone was found. Biegenwald was known to have a beard and owned multiple vehicles, including one that roughly matched the witness description. Despite these connections, authorities have not yet declared the case fully solved.

Marrone is one of six victims recently identified by a cold case task force. Joseph Giacalone, a retired NYPD cold case sergeant involved in the effort, stated that the initiative could serve as a model for law enforcement agencies across the country. He praised the district attorney for establishing a dedicated cold case squad, bringing in federal and state partners, and investing resources in solvable cases without giving up.

According to the District Attorney's office, three of the six recently identified individuals are believed to have been homicide victims. One is thought to have drowned accidentally, while the cause of death for the final individual remains under investigation. The identification of these victims marks a significant milestone in a project that has spanned decades.

Along with Marrone, five other cold case victims were identified this week. Antoinette Rugg, previously the Heckscher Jane Doe, was found in 1978 with a belt around her throat. Ramon Perez y Rivera, known as Raymond Doe, was found in 1976 with burn and gunshot wounds. Kyong-Ok Kim, the Riverhead Jane Doe, was discovered in 1990, and her case remains under investigation.

Other identified individuals include Omelios Steward, found in 1990 and believed to have drowned, and Andreas Kupke, a German national whose remains were found in Montauk in 1999. Kupke had traveled to the U.S. for a brief vacation and never returned home. His cause of death also remains unclear.

In a statement, District Attorney Tierney emphasized the importance of giving victims their names and their families answers. He noted that while five decades have passed since the first of these individuals was found, the commitment to identifying them and pursuing justice has remained constant.