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Dark So Early, Dark So Long (09/15)
Rosemary Forsyth plays wealthy Leslie Fielding, the victim of a blackmail plot. She and her husband Glen, played by Guy Stockwell, call on Mannix when it appears that she, rather than the blackmailer, may go to prison.

Cold Trail (09/22)
Why the stepdaughter of an obscure college professor should be the target of a professional kidnap plot is a mystery to Mannix. When the detective agrees to protect the young woman from her persistent pursuers, he too becomes their prisoner.

A Step in Time (09/29)
When Mannix reports witnessing a woman's murder, the sheriff insists that it happened the previous year and that the victim's husband has been in shock ever since. Mannix is hired to investigate. Dean Stockwell and Shelley Fabares guest-star.

Wine from These Grapes (10/06)
Mannix returns to his hometown to investigate the murder of a worker during a labor dispute. When the evidence points to labor organizer Juan Esparza, the town becomes a divided camp--some demanding swift justice, and others who insist Esparza is being railroaded.

Woman in the Shadows (10/13)
A young woman inherits a portion of the original handwritten manuscript of "Das Kapital," and Soviet representatives indicate they are anxious to purchase it. The young woman comes to Mannix for assistance when it seems that the Soviets really intend to use unorthodox means to obtain it.

Days Beyond Recall (10/20)
Vic Morrow plays the alcoholic brother of Jane Haley, who hires Mannix to rescue her brother from skid row. Mannix soon learns that the man is not her brother but Eric Latimer, a respected magazine writer who is concealing his identity after being presumed lost at sea in a boating accident.

Run Till Dark (10/27)
A respected Little League manager goes into hiding after a syndicate hood makes an attempt on his life. When Mannix enters the case, he learns that the mysterious order for the manager's death came from behind prison walls.

The Glass Trap (11/03)
Ross Santini is a police detective who acts suspiciously when he takes custody of Eric Brastow, a top criminal whom Mannix has captured. Mannix's suspicions are further aroused when he learns that the woman introduced as the detective's wife is a phony.

A Choice of Evils (11/10)
Peggy Fair is kidnapped by two men who leave a note warning Mannix that only he can save her life. The private detective learns that to rescue his secretary, he must investigate a company whose officers know he has been hired for the job and are openly hostile to him.

A Button for General D (11/17)
A beautiful girl singer is kidnapped by hoodlums who believe she knows where a fortune is hidden. Mannix enters the case when the mysterious words of a dying criminal suggest a clue to the whereabouts of both the girl and the money.

The Man Outside (11/24)
A retired Army general is photographed with a woman who is not his wife. Mannix buys back the negatives for the general but is held up and robbed of them by two men. When the men later claim Mannix had the wrong film, the general mysteriously tells Mannix to get off the case.

Murder Times Three (12/01)
A runaway girl's father hires Mannix to find her and then tries to pay him to cancel the search. Mannix is further mystified when his other clients ask him to drop their cases and two motorcycle toughs try to run him over.

Catspaw (12/08)
A private detective hired to investigate a blackmailer finds out more than his employer wanted to know. When the detective is murdered, Mannix enters the case and he too learns a lot more than expected.

To Save a Dead Man (12/15)
A condemned man insists he committed a murder, although the evidence indicates he is innocent. When a dying man confesses to a nun that his testimony sent an innocent man to death row, Mannix is asked to investigate.

Nightshade (12/29)
Milton Berle stars as a nightclub comic who is being blackmailed, presumably by a soldier listed missing in Vietnam. When a close friend of Mannix's is murdered, Mannix is intrigued to learn that he was working for the comedian, who refuses to discuss the case.

Babe in the Woods (01/05)
A genius director of microcircuits is murdered before he can show his employer the plans for a phenomenal new computer. When the valuable plans cannot be found, Mannix is asked to search for them--but an unexpected enemy has other ideas.

The Sound of Murder (01/12)
Mannix is engaged to solve a case for a client who secretly doesn't want him to succeed. The client's intricate plot fails when a man using a directional microphone to plan a robbery accidentally overhears him commit a murder.

Moving Target (01/19)
Mannix is convinced that the man trying to kill Ken Mitchell is Mitchell's partner, Paul Anders. His confusion arises when Mitchell later tells him that he has no partner, that he just created one for tax purposes. Syndicated columnist Art Buchwald makes his dramatic TV debut in a brief scene.

Cry Pigeon (01/26)
A battle for power between rival gang lords threatens to break into open warfare--with Mannix in the middle. When the son of one of the mob leaders is shot to death during a secret meeting with Mannix, suspicion points to the private detective as having arranged the ambush.

A Walk in the Shadows (02/09)
Although evidence against his client, who is accused of murdering his wife, seems overwhelming, Mannix believes his fervent plea of innocence. Mannix agrees to investigate after the man tells lies so clumsy they must contain some truth.

Lifeline (02/16)
Lou Rawls guest-stars as Vance Logan, a nightclub singer who hides from the police rather than face a minor traffic violation. Logan is wounded by police and captured. When he escapes from the hospital, Mannix, a close friend, takes Logan into his home while he investigates the circumstances. Logan again disappears, along with Mannix's gun, and is later charged with murder.

To Draw the Lightning (02/23)
When a police officer kills a man against whom he was known to hold a grudge, the department suspends him despite his insistence that the killing was not planned. The officer asks Mannix to investigate but later mysteriously insists Mannix withdraw from the case.

Scapegoat (03/01)
Mannix is engaged to go to London to bring jewels worth $8 million to a museum in the United States. Before he can depart, he is kidnapped, and a double takes his passport and tickets, goes to London and is given the jewels. Mike Connors plays both Mannix and the double.

Death in the Fifth Gear (03/08)
Mannix crashes his race car into a brick wall and suffers serious head injuries. Hospitalized, Mannix is beset by vivid hallucinations. When he recovers his senses, he cannot determine if conversations he heard threatening his life were real.

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