Ruth Marie Terry (September 8, 1936 – c. July 1974), also known as Lady of the Dunes, was a formerly unidentified murder victim found on July 26, 1974, in the Race Point Dunes in Provincetown, Massachusetts, United States. Her body was exhumed in 1980, 2000, and 2013[5] in efforts to identify her.  On October 31, 2022, the FBI field office in Boston announced that Terry had been officially identified.  As of August 28, 2023 her husband Guy Muldavin has been officially named as Terry's killer.