25 episodesFirst aired 27 September 1969
E1Sept 196952m
Two pals of Peggy's are accused of murder, and the real killer is elusive.
E2Oct 196952m
A colleague's death leads Mannix into a dubious investigation.
E3Oct 196952m
Old home week, as Mannix looks into a murder and tries to make up with his father.
E4Oct 196952m
Someone is out to get a film star.
E5Oct 196952m
Mannix reopens a malpractice case against opposition.
E6Mar 197052m
Three thugs hold Mannix, Peggy, and a woman hostage, claiming they want the $312,000 she has in a briefcase at home, but they may be after something even more valuable.
E7Nov 196952m
An accidental drowning has many surprising facets.
E8Nov 196952m
A secretary has an enemy, but who?
E9Nov 196952m
A hit-and-run case lands Mannix in the middle of a gang war.
E10Dec 196952m
A killer's attempt leaves Mannix blind.
E11Dec 196952m
The attempted murder of an executive leads Mannix to several likely suspects.
E12Dec 196952m
A stolen thoroughbred has Mannix buffaloed.
E13Dec 196952m
A policeman's son is suspected in a robbery.
E14Jan 197052m
Peggy's late husband is named on a list of payoffs.
E15Jan 197052m
A wealthy man hires Mannix to find the person blackmailing him—eventually leading to Mannix being suspected of murder.
E16Jan 197052m
Eyewitnesses peg Mannix's client, but the victim isn't what he seems, either.
E17Jan 197052m
A domestic quarrel, and a missing secretary, make for a confusing case—“Rashomon”-style.
E18Jan 197052m
Mannix tries to locate an heir, who is brought into danger by the attention.
E19Feb 197052m
A murder in the offing implicates an old army chum, but the victim's identity is uncertain.
E20Feb 197052m
Mannix has an enemy who seems to be dead.
E21Feb 197052m
The strange utterances of a disturbed young girl are clues in a case of robbery and murder.
E22Feb 197052m
A colleague's death leaves Mannix with the evidence he was murdered for.
E23Mar 197052m
A TV host's murder proves difficult to investigate, as everyvbody wants it canceled.
E24Mar 197052m
Mobsters try to extort a million from a small town.
E25Mar 197052m
Carnival mishaps may be aimed at the proprietor.