Episode 1
Two pals of Peggy's are accused of murder, and the real killer is elusive.
Episode 2
A colleague's death leads Mannix into a dubious investigation.
Episode 3
Old home week, as Mannix looks into a murder and tries to make up with his father.
Episode 4
Someone is out to get a film star.
Episode 5
Mannix reopens a malpractice case against opposition.
Episode 6
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.
Episode 7
An accidental drowning has many surprising facets.
Episode 8
A secretary has an enemy, but who?
Episode 9
A hit-and-run case lands Mannix in the middle of a gang war.
Episode 10
A killer's attempt leaves Mannix blind.
Episode 11
Lots of people want an executive out of the way.
Episode 12
A stolen thoroughbred has Mannix buffaloed.
Episode 13
A policeman's son is suspected in a robbery.
Episode 14
Peggy's late husband is named on a list of payoffs.
Episode 15
A blackmailing case has highs and lows.
Episode 16
Eyewitnesses peg Mannix's client, but the victim isn't what he seems, either.
Episode 17
A domestic quarrel leads to a murder, and the investigation to an earlier incident.
Episode 18
Mannix tries to locate an heir, who is brought into danger by the attention.
Episode 19
A murder in the offing implicates an old army chum, but the victim's identity is uncertain.
Episode 20
Mannix has an enemy who seems to be dead.
Episode 21
The strange utterances of a disturbed young girl are clues in a case of robbery and murder.
Episode 22
A colleague's death leaves Mannix with the evidence he was murdered for.
Episode 23
A TV host's murder proves difficult to investigate, as everyvbody wants it canceled.
Episode 24
Mobsters try to extort a million from a small town.
Episode 25
Carnival mishaps may be aimed at the proprietor.
