After being shot by robbers who were holding up a store, a young police officer is treated by a doctor who was on the scene. Unfortunately, the officer later dies, and the doctor becomes the only one who can identify the robbers. But when Stone and Keller try to call him, they find that he had to be using a phony name. The man has been practicing using the name of several different doctors.
When the brother of a cop is killed along with the mobster he was working for, the young officer is assigned to work undercover as a bookie to find out who ordered the hit. Stone, who is ordered to tell no one else about the man's assignment. is concerned that the officer is too concerned with revenge to handle the job effectively.
Two judges and two attorneys have been murdered, with a book about disbarment procedures found nearby. The detectives find that the killer is a disbarred attorney's son, who is executing those he blames for destroying his father.
A terminally ill circus rigger is killed in his hospital bed by someone made up as a clown. At first, the detectives suspect the victim's brother may have done it as a mercy killing, but when the brother is murdered as well, suspicion shifts to the nephew of the two men.
This pilot for the series "Bert D'Angelo Superstar" (which had started its regular run two weeks earlier, and was a total bomb in the ratings) gives Mira Sorvino's dad a role to match his weight and ego: he plays a New York City detective who comes to San Francisco in search of a back-home cop killer, and decides to stay when the villain is caught.
A 15-year-old runaway girl comes to the apartment of the father she hasn't seen in years, only to find a man dead inside. When she finds out her father is not the dead man but possibly the killer, she still continues to search for him, not knowing that he is also being hunted by the brother of the dead man, who plans to kill him.
A teenage girl is frustrated by her mother's condescending ways. When a man she sees strike her mother is killed by the mob the girl is a witness. She claims responsibility to damage her family reputation hoping her mother feels degraded.
Larry Wilson is a motorcycle cop who doesn't always use procedure. Instead he zeros on the point and rushes to it sometimes lacking caution. Stone is frustrated by the rambunctious officer, who happens also to be dating his daughter.
After receiving crank calls, a paranoid man fences in his home and keeps his wife and daughter sheltered. When he panics and shoots a cop who was guarding the house he covers by identifying an ex con. The paranoia now becomes real.