Janice Rule guest stars as prostitute Beverly Landau, who after leaving her latest "John" is attacked and knifed by a religious fanatic who preys on San Francisco's "working girls" in a perverse attempt to save their souls. Three women have already been murdered by the fanatic, and as the sole survivor Beverly is placed under protective custody at the Hotel Kennedy, with Inspector Steve Keller (Michael Douglas) determined to keep the woman alive long enough to testify--if indeed she intends to do so. Among the locations utilized in this episode are Fisherman's Wharf and Ghiradelli Square.