In 1974, a 14-year-old New Jersey girl disappeared after meeting up with a man regarding a babysitting job. She had placed an ad in the paper, and the man in question had a 5-year-old son he allegedly needed care for. But when she went missing from their meeting spot, a bus stop, she was never seen again. And then, a horrifying ransom call came in to her family residence followed by a disturbingly poetic letter. This is the disappearance of Margaret Fox.