Episode 1
A blackmail victim is headed for prison.
Episode 2
A big kidnapping plot and an insignificant victim.
Episode 3
Mannix is the eyewitness of a murder; reportedly, it occurred a year before.
Episode 4
A labor dispute in his home town ends in murder.
Episode 5
Soviet agents want Marx's manuscript of Das Kapital, and a young woman has just inherited part of it.
Episode 6
A skid row bum is concealing his identity.
Episode 7
A contract is taken out on a Little League manager.
Episode 8
Strange circumstances surround an arrest by Mannix.
Episode 9
Peggy is kidnapped to force Mannix into an investigation.
Episode 10
The Case of the Singing Harp: a singer is kidnapped to reveal hidden loot.
Episode 11
Blackmail has its twists and turns.
Episode 12
Hired and fired, Mannix pursues a missing person.
Episode 13
Blackmail turns to murder and beyond.
Episode 14
Evidence rules out one confession, indicates another.
Episode 15
Disappearing enemies and friends force Mannix into a blackmail investigation.
Episode 16
Murder on the golf course leads to open season on Mannix, who's looking for valuable microcircuit plans hidden by the victim.
Episode 17
A dubious client is caught in his own machinations.
Episode 18
The fictitious name on a partnership contract apparently comes to life.
Episode 19
Mannix in the middle of a gang war.
Episode 20
In defense of a client accused of murder.
Episode 21
A singer piles into mounting trouble with the law.
Episode 22
Was a police shooting premeditated? Mannix is on (and off) the case.
Episode 23
Mannix transports jewels from London, or is that his double?
Episode 24
A racing accident lays Mannix up. While recuperating, he hears threats against him, but are they real?
