saddleback college who'd volunteered to work as an usher at the campus concert that night. >> it has always been hard over the years to say her name. robbin is this beautiful girl whose live was cut short and who was a friend of mine who i thought was wonderful. >> police started investigating. >> there really was minimal evidence, and it was very random. >> helen moreno is a retired supervising investigator with the orange county district attorney's office. >> there was no rape. there was no loss. there was nothing taken. so there just really was no evidence that led us in any one