Saturday, July 2, 1966, was a hot and sunny day at the Indiana Dunes National Lakeshore in Porter Indiana. Three young women, 19-year-old Patricia Blough, 21-year-old Ann Miller, and 19-year-old Renee Bruhl, were spending the day together at the beach. Around noon, the three women were seen getting onto a boat with a dark-haired man. They would never return. What happened to the vanishing women of the Indiana Dunes State Park?