Donna Jou was a 19-year-old pre-med student who disappeared after leaving her mother’s home in Rancho Santa Margarita, California, on June 23, 2007. She had gone with a man named John Steven Burgess, whom she had met online; he took her on his motorcycle to a party at his house in Los Angeles. Donna called a friend from that party saying she was concerned about Burgess, and that was the last confirmed contact.

The next day Donna’s mother received disturbing text messages from Donna’s phone that the family believes were not sent by her. When Donna failed to return home, the family reported her missing two days later. In 2009 Burgess confessed to police that Donna died of an accidental overdose at the party and that he disposed of her body by dumping it in the ocean; he was charged with involuntary manslaughter and served a brief prison sentence. Donna’s remains have never been recovered and investigators consider foul play likely.

If anyone knew Donna, Burgess, or attended that party, can you share information that might explain what happened that night?