In the summer of 1974, the Moxley family moved into their dream home on Walsh Lane in Belle Haven, one of America's most exclusive gated communities. Located in Greenwich, Connecticut, the neighborhood was the epitome of 1970s American wealth, with sprawling mansions and beautiful stone houses dotting its pristine landscape. For 15-year-old Martha Moxley, it seemed like the perfect place to call home. But on October 30, 1975, this idyllic world would be shattered forever.