Denise Holly Dorfman, 28, vanished from her San Francisco apartment on February 9, 1980. An artist, dancer and concert pianist who was studying and working at the University of San Francisco, she was last seen leaving her unit—apparently for a short errand—with the lights on and the door unlocked. Her purse and money remained inside and there were no signs of forced entry or struggle.

Three days later the university received a phone call from someone claiming to be Denise and saying she was taking a leave of absence; it is not known whether that call actually came from her. A police investigation and work by a private detective hired by the family produced no substantial leads, and Denise has not been seen since.

If anyone knew Denise, lived near her in 1980, or has information that could help explain her disappearance, please come forward.