• Season 3 - Episode 23 : Solitaire Mar 13, 1975

    Stone works in a drug investigation with an undercover officer (Tony Lo Bianco) who is a loner.

  • Season 3 - Episode 22 : Labyrinth Feb 27, 1975

    Keller and Stone spearhead an unusual manhunt through the corridors of one of San Francisco's great hotels.

  • Season 3 - Episode 21 : Asylum Feb 20, 1975

    Keller goes under cover as a patient in a mental hospital where questionable deaths have occurred; guest James Olson.

  • Season 3 - Episode 20 : River of Fear Feb 13, 1975

    A bridegroom returning from a Hawaiian honeymoon secretly plots his wife's murder; guests Peter Haskell, Kim Richards.

  • Season 3 - Episode 19 : The Programming of Charlie Blake Feb 6, 1975

    A psychiatrist uses hypnosis to shift guilt for his wife's murder onto a patient; guests Sharon Acker, Dean Stockwell.

  • Season 3 - Episode 18 : Ten Dollar Murder Jan 30, 1975

    The taxi-robbing spree conducted by a pair of high-school students results in the death of an undercover officer.

  • Season 3 - Episode 17 : Endgame Jan 23, 1975

    His daughter nearly causes him to walk into a trap, but, with Keller's help, Stone apprehends the men he is after.

  • Season 3 - Episode 16 : Letters From the Grave Jan 16, 1975

    A wall of Alcatraz Prison crumbles, revealing the victim of a 20-year-old murder; guests Peter Strauss, William Windom.

  • Season 3 - Episode 15 : False Witness Jan 9, 1975

    An overly zealous officer plants evidence to ensure the arrest of a drug dealer.

  • Season 3 - Episode 14 : Mister Nobody Dec 19, 1974

    To protect a friend's grandson, an elderly cobbler (Sam Jaffe) confesses to a murder he witnessed.

  • Season 3 - Episode 13 : The Twenty-Five Caliber Plague Dec 12, 1974

    A handgun affects the lives of many different people during a 24-hour period; guests Lee H. Montgomery, Anthony Geary.

  • Season 3 - Episode 12 : License to Kill Dec 5, 1974

    Stone's loyalty to an old friend could be fatal to the detective when the man seeks revenge against his son's killers.

  • Season 3 - Episode 11 : Bird of Prey Nov 21, 1974

    Stone and Keller go to an airbase to look into the murder of a woman by a uniformed man; guest Dennis Cole.

  • Season 3 - Episode 10 : For Good or Evil Nov 14, 1974

    A boy who saw the slaying of a mob chief is torn between telling Stone and joining the syndicate; guest Mike Evans.

  • Season 3 - Episode 9 : Cry Help Nov 7, 1974

    Keller and Stone investigate a case of child abuse that leads to murder; guests Mariette Hartley, Clint Howard.

  • Season 3 - Episode 8 : Flags of Terror Oct 31, 1974

    Three revolutionaries, caught in the act of smuggling bombs, take Keller and others as hostages; guest Carl Franklin.

  • Season 3 - Episode 7 : Jacob's Boy Oct 24, 1974

    An investigation clears a man of murder, but also uncovers a crime from his past; guests Brock Peters, Dabney Coleman.

  • Season 3 - Episode 6 : One Chance to Live Oct 17, 1974

    A woman harassed by a troubled man conceals information that could save her life; guest Joanne Linville.

  • Season 3 - Episode 5 : I Ain't Marchin' Anymore Oct 10, 1974

    Keller poses as a draft evader and infiltrates a group to investigate the murder of a deserter; guest Don Stroud.

  • Season 3 - Episode 4 : Mask of Death Oct 3, 1974

    A female impersonator discovers that his female alter ego is a ruthless killer who is taking control of him.

  • Season 3 - Episode 3 : Target: Red Sep 26, 1974

    A former CIA agent and a retired Army general conspire to kill a top Chinese delegate; guest Bill Bixby.

  • Season 3 - Episode 2 : The Most Deadly Species Sep 19, 1974

    Keller unwittingly leaks information to his neighbor (Brenda Vaccaro), a professional killer; guest Barry Sullivan.

  • Season 3 - Episode 1 : One Last Shot Sep 12, 1974

    When a police officer is accidentally killed, it is discovered that his partner may have been drunk at the time of the shooting.