Girl on the Road Barnaby Jones : Season 8 Episode 6

At the request of a former girlfriend in Chicago, J.R. tracks down her younger sister, Jennifer, who has run away to LA. While at a party, Jennifer makes a phone call from the bedroom and sees the drugged rock-star Randy March and the red dress belonging to March's dead girlfriend. Believing that Jennifer may have seen the dead woman, March's representatives try to track down the teen.