Dark So Early, Dark So Long
E1
A blackmail victim is headed for prison.
Cold Trail
E2
A big kidnapping plot and an insignificant victim.
A Step in Time
E3
Mannix is the eyewitness of a murder; reportedly, it occurred a year before.
Wine From These Grapes
E4
A labor dispute in his home town ends in murder.
Woman in the Shadows
E5
Soviet agents want Marx's manuscript of Das Kapital, and a young woman has just inherited part of it.
Days Beyond Recall
E6
A skid row bum is concealing his identity.
Run Till Dark
E7
A contract is taken out on a Little League manager.
The Glass Trap
E8
Strange circumstances surround an arrest by Mannix.
A Choice of Evils
E9
Peggy is kidnapped to force Mannix into an investigation.
A Button for General D
E10
The Case of the Singing Harp: a singer is kidnapped to reveal hidden loot.
The Man Outside
E11
Blackmail has its twists and turns.
Murder Times Three
E12
Hired and fired, Mannix pursues a missing person.
Catspaw
E13
Blackmail turns to murder and beyond.
To Save a Dead Man
E14
Evidence rules out one confession, indicates another.
Nightshade
E15
Disappearing enemies and friends force Mannix into a blackmail investigation.
Babe in the Woods
E16
Murder on the golf course leads to open season on Mannix, who's looking for valuable microcircuit plans hidden by the victim.
The Sound of Murder
E17
A dubious client is caught in his own machinations.
Moving Target
E18
The fictitious name on a partnership contract apparently comes to life.
Cry Pigeon
E19
Mannix in the middle of a gang war.
A Walk in the Shadows
E20
In defense of a client accused of murder.
Lifeline
E21
A singer piles into mounting trouble with the law.
To Draw the Lightning
E22
Was a police shooting premeditated? Mannix is on (and off) the case.
Scapegoat
E23
Mannix transports jewels from London, or is that his double?
Death in the Fifth Gear
E24
A racing accident lays Mannix up. While recuperating, he hears threats against him, but are they real?