Air date: 1971-09-15

Runtime: 52 min

A blackmail victim is headed for prison.

Air date: 1971-09-22

Runtime: 52 min

A big kidnapping plot and an insignificant victim.

Air date: 1971-09-29

Runtime: 52 min

Mannix is the eyewitness of a murder; reportedly, it occurred a year before.

Air date: 1971-10-06

Runtime: 52 min

A labor dispute in his home town ends in murder.

Air date: 1971-10-13

Runtime: 52 min

Soviet agents want Marx's manuscript of Das Kapital, and a young woman has just inherited part of it.

Air date: 1971-10-20

Runtime: 52 min

A skid row bum is concealing his identity.

Air date: 1971-10-27

Runtime: 52 min

A contract is taken out on a Little League manager.

Air date: 1971-11-03

Runtime: 52 min

Strange circumstances surround an arrest by Mannix.

Air date: 1971-11-10

Runtime: 52 min

Peggy is kidnapped to force Mannix into an investigation.

Air date: 1971-11-17

Runtime: 52 min

The Case of the Singing Harp: a singer is kidnapped to reveal hidden loot.

Air date: 1971-11-24

Runtime: 52 min

Blackmail has its twists and turns.

Air date: 1971-12-01

Runtime: 52 min

Hired and fired, Mannix pursues a missing person.

Air date: 1971-12-08

Runtime: 52 min

Blackmail turns to murder and beyond.

Air date: 1971-12-15

Runtime: 52 min

Evidence rules out one confession, indicates another.

Air date: 1971-12-29

Runtime: 52 min

Disappearing enemies and friends force Mannix into a blackmail investigation.

Air date: 1972-01-05

Runtime: 52 min

Murder on the golf course leads to open season on Mannix, who's looking for valuable microcircuit plans hidden by the victim.

Air date: 1972-01-12

Runtime: 52 min

A dubious client is caught in his own machinations.

Air date: 1972-01-19

Runtime: 52 min

The fictitious name on a partnership contract apparently comes to life.

Air date: 1972-01-26

Runtime: 52 min

Mannix in the middle of a gang war.

Air date: 1972-02-09

Runtime: 52 min

In defense of a client accused of murder.

Air date: 1972-02-16

Runtime: 52 min

A singer piles into mounting trouble with the law.

Air date: 1972-02-23

Runtime: 52 min

Was a police shooting premeditated? Mannix is on (and off) the case.

Air date: 1972-03-01

Runtime: 52 min

Mannix transports jewels from London, or is that his double?

Air date: 1972-03-08

Runtime: 52 min

A racing accident lays Mannix up. While recuperating, he hears threats against him, but are they real?