On July 2, 1966, 19-year-old Renee Bruhl and her friends Patricia Blough and Ann Miller went missing from Indiana Dunes State Park in Chesterton, Indiana. The three arrived about 10:00 a.m., parked near the Lake Michigan shoreline and were seen entering the water around noon. Witnesses later reported seeing them board a white boat with a blue interior operated by an unidentified man described as in his twenties with dark, wavy hair. Their beach belongings were left behind and remained unclaimed into the evening, prompting concern.

A formal search began three days later and investigators followed leads, including reports of two boats matching the description, but no trace of the women or the boats has ever been found. Theories mentioned in reports range from accidental drowning to foul play linked to acquaintances in the horse market, and several unverified sightings were reported afterward, but nothing has been confirmed. Does anyone have information about the day at the beach or the man in the boat?