Mannix: Season 3
Season 3 Lore Primer
Key plot threads, lore context, and character stakes you need to remember before diving into this season.
- Directly follows the overarching narrative developments of Mannix Season 2.
- Faction dynamics and core character alliances shift under escalating external stakes.
- Crucial mysteries introduced previously reach key turning points and narrative reckonings.
- Sets up serialized story arcs that build directly toward the climactic season finale.
Episode Guide
Season 3 Progress Shield
Eagles Sometimes Can't Fly
Sep 27, 1969 · 52 min
Two pals of Peggy's are accused of murder, and the real killer is elusive.
Color Her Missing
Oct 4, 1969 · 52 min
A colleague's death leads Mannix into a dubious investigation.
Return to Summer Grove
Oct 11, 1969 · 52 min
Old home week, as Mannix looks into a murder and tries to make up with his father.
A Question of Midnight
Oct 25, 1969 · 52 min
Mannix reopens a malpractice case against opposition.
A Penny for the Peep Show
Mar 28, 1970 · 52 min
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.
A Sleep in the Deep
Nov 8, 1969 · 52 min
An accidental drowning has many surprising facets.
The Nowhere Victim
Nov 29, 1969 · 52 min
A hit-and-run case lands Mannix in the middle of a gang war.
Who Killed Me?
Dec 13, 1969 · 52 min
The attempted murder of an executive leads Mannix to several likely suspects.
Medal for a Hero
Jan 3, 1970 · 52 min
Peggy's late husband is named on a list of payoffs.
Walk With a Dead Man
Jan 10, 1970 · 52 min
A wealthy man hires Mannix to find the person blackmailing him—eventually leading to Mannix being suspected of murder.
A Chance at the Roses
Jan 17, 1970 · 52 min
Eyewitnesses peg Mannix's client, but the victim isn't what he seems, either.
Blind Mirror
Jan 24, 1970 · 52 min
A domestic quarrel, and a missing secretary, make for a confusing case—“Rashomon”-style.
Harlequin's Gold
Jan 31, 1970 · 52 min
Mannix tries to locate an heir, who is brought into danger by the attention.
Who is Sylvia?
Feb 7, 1970 · 52 min
A murder in the offing implicates an old army chum, but the victim's identity is uncertain.
Only One Death to a Customer
Feb 14, 1970 · 52 min
Mannix has an enemy who seems to be dead.
Fly, Little One
Feb 21, 1970 · 52 min
The strange utterances of a disturbed young girl are clues in a case of robbery and murder.
The Search for Darrell Andrews
Feb 28, 1970 · 52 min
A colleague's death leaves Mannix with the evidence he was murdered for.
Murder Revisited
Mar 7, 1970 · 52 min
A TV host's murder proves difficult to investigate, as everyvbody wants it canceled.
War of Nerves
Mar 14, 1970 · 52 min
Mobsters try to extort a million from a small town.
Once Upon a Saturday
Mar 21, 1970 · 52 min
Carnival mishaps may be aimed at the proprietor.