At 9:43 a.m. on April 21, 2016, the Carver County Sheriff's Office received an unusual call. "We're at Prince's house," a man named Andrew Kornfeld told the dispatcher as he frantically requested an ambulance to Paisley Park, the "Purple Rain" singer's legendary estate in the Minneapolis suburb of Chanhassen. The day before, Prince's team had reached out to addiction specialist Howard Kornfeld for help with the Grammy winner's opioid dependency. Unable to travel from California, he sent his son Andrew, a 26-year-old pre-med student, in his place.