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