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Eagles Sometimes Can't Fly (09/27)
Mannix launches a double-edged search for Brad Turner and Jimmy Whitewing, two friends of Peggy's, who are wrongly accused of murder, and for the real killer who can only be linked to the crime by a dancer. Brad and Jimmy seek refuge in Peggy's apartment but flee when Mannix offers to help them.

Color Her Missing (10/04)
Mannix sets out to find the killer of his friend and fellow P.I. Cory Boone and winds up investigating for attorney Charles Egan--who is suspected by police lieutenant Adam Tobias of having committed the crime.

Return to Summer Grove (10/11)
Mannix returns to his home in Summer Grove at the request of Jean McBride. She asks him to investigate a murder for which her husband is the prime suspect. While attempting to unravel the mystery, Mannix tries also to reconcile with his father, with whom he has not spoken in years.

Playground (10/18)
Robert Conrad portrays Mitch Cantrell, a movie star who refuses to believe Mannix's contention that someone is out to kill him. The private eye's investigation turns up a number of prime suspects, including Cantrell's girlfriend Mona and his sidekick Pete.

A Question of Midnight (10/25)
At the request of an old friend, Mannix investigates an old malpractice charge against Dr. Benjamin Holland, only to be hindered at every turn by everyone on the hospital staff, including Dr. Holland. As Mannix uncovers secrets, he receives unexpected help from a hospital nurse and Riva Daniels, who first tries romance to get Mannix off the case.

Penny for the Peepshow (11/01)
Celia knows the location of a small fortune in cash; she comes to Mannix to get help in finding its origin, but they are interrupted by three escaped convicts who break into Mannix's office to use as a hideout.

A Sleep in the Deep (11/08)
Mannix is hired to investigate the drowning of a man the police think died accidentally, but whose widow believes he was murdered. Mannix digs up a number of suspects, including the young attorney in love with the dead man's wife, a millionaire industrialist and a beautiful woman who isn't what she seems to be.

Memory: Zero (11/22)
Mannix is hired by Maggie Welles, secretary to a recently deceased private eye, who claims someone is trying to kill her. With only Maggie's faulty memory to depend on, Mannix finds the going rough, especially when her romantic inclinations get in the way.

The Nowhere Victim (11/29)
Mannix sets out to locate the missing victim in a hit-and-run accident and winds up in the middle of a feud between two warring families of the notorious "Brotherhood." Suspected by the "Brotherhood" of being the driver of the hit-and-run car, Mannix is hired by one family and marked for death by the other.

The Sound of Darkness (12/06)
Mannix faces the challenge of a lifetime when he tries to trap a killer whose bullet has blinded him. With the help of Peggy and a couple of experts on blindness, Mannix learns to function in a sightless world so he can set himself up as the bait for the killer.

Who Killed Me? (12/13)
Mannix is hired by an aircraft industry executive to find out who tried to kill him by sabotaging his private plane. The investigation leads Mannix to a list of suspects, headed by the executive's business partners, his wife and his artist girlfriend.

Missing: Sun and Sky (12/20)
The theft of a championship racehorse baffles Mannix when he discovers the only motive belongs to the horse's owners. During his search for the missing racehorse, Mannix gets some discouraging advice from wily horse trainer Sam Dallas and follows up on a ransom note that almost costs him his life.

Tooth of the Serpent (12/27)
Mannix is caught in the middle of the generation gap when police detective Jim Chancellor's wife hires him to find their son, who may have been involved in a robbery which Chancellor is investigating. When Chancellor discovers the detective was hired by his wife, he orders Mannix off the case and then goes after his son alone.

Medal for a Hero (01/03)
Mannix tries to clear the name of Peggy's late husband Marcus Fair, when his name appears on a list of policemen who were being paid off by a burglary ring. Stumped by the seemingly impenetrable code in Marcus' police diary, Mannix seeks the help of a pianist friend with a flair for cryptology.

Walk with a Dead Man (01/10)
Mannix agrees to trap a blackmailer who has been hounding a wealthy businessman. Ironically, Mannix then becomes the target of a police dragnet. The many twists and turns of Mannix's investigation take him from the dregs of skid row to the mansions of high society.

A Chance at the Roses (01/17)
Mannix takes on the task of proving the innocence of a man identified by eyewitnesses as having shot a pharmacist during an attempted holdup. The going gets rough when the police block Mannix's path after he uncovers the puzzling fact that the holdup victim is not a real pharmacist.

Blind Mirror (01/24)
Mannix becomes enmeshed in a domestic quarrel between an estranged married couple that ends in homicide. The private eye finds the solution to the case rests in the conflicting stories surrounding the previous near-drowning of the victim.

Harlequin's Gold (01/31)
Mannix is hired to find an Australian seaman who has supposedly inherited a small fortune, only to learn that he may be setting up the sailor for murder. Mannix's investigation reveals that the sailor is the only survivor of a shipwreck that was the result of a monstrous crime on the high seas.

Who Is Sylvia? (02/07)
A woman with a double identity hires Mannix to find the man who is trying to murder her. Mannix's investigation leads him to believe that her husband, who also happens to be an old army buddy of the private eye, might be the man they are searching for.

Only One Death to a Customer (02/14)
Three attempts are made on Mannix's life within 24 hours, and the only man with a motive is dead. To help unravel the mystery, the private eye calls on the man's ex-girlfriend to help him investigate the dead man's previous activities.

Fly, Little One (02/21)
Mannix wins the confidence of a mentally disturbed little girl and discovers she has evidence that endangers her life--and his. Hired to investigate a robbery-murder, Mannix enters the fantasy world of little Dana and, from her disjointed remarks, realizes she has made herself a target for a killer.

The Search for Darrell Andrews (02/28)
Mannix comes into possession of a roll of film that cost a fellow private eye his life. Before Mannix can turn the film over to the police, Peggy and her son are taken hostage in exchange for the film.

Murder Revisited (03/07)
Investigating a murder that involves a vicious television commentator, Mannix realizes nobody wants him on the case, including the chief suspect and her twin sister. When hired thugs try to kill him, Mannix takes refuge with a lonely spinster, then gets a clue that takes him to a ruthless crime-syndicate leader.

War of Nerves (03/14)
Mannix gets caught in the middle when a town is threatened with a flood of toxic nerve gas unless it pays a million dollars to a crime ring. Investigating the disappearance of a wealthy girl, Mannix learns she is being held hostage by the criminals to force compliance with their demands.

Once Upon a Saturday (03/21)
Mannix investigates a series of accidents at a carnival that look suspiciously like attempts on the life of its owner. After taking the case, Mannix finds he's got less than 24 hours to find the culprit before the carnival opens to the public.

 

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