Mary Ann Lees, a 15-year-old girl from Philadelphia, PA, tragically died on March 31, 1975. Her body was discovered in the Tinicum Marsh, along with that of another young girl, Layne Dorothy Spicer, 16, who was also a student at Upper Darby High School. The circumstances surrounding their deaths were part of a series of murders that occurred in the mid-1970s, involving young women who disappeared from a location known as the "Castle," owned by Robert Marconi. Despite extensive investigations, th
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