Melinda

Frankie J. Parker is a Los Angeles radio disc jockey. In his spare time, Frankie takes karate lessons at a school run by his friend Charles Atkins. A woman in a rental car, newly arrived from Chicago, listens to Frankie's radio program. They meet at a nightclub owned by another of Frankie's friends, former football player Tank Robertson. He invites her to a party on Tank's yacht, making girlfriend Terry Davis jealous. When he returns home, he finds the apartment ransacked and Melinda murdered. It turns out her real name is Audrey Miller.