September 16, 1967 · 52 min
Mannix has side action on a kidnap case.
September 23, 1967 · 52 min
Mannix is hired to find out any dirt on Govenor-elect Adam Pierson, and that's when the trouble starts: with his syndicate connections, people are dying fast.
September 30, 1967 · 52 min
Mannix is set up for the murder of an old girlfriend's husband.
October 7, 1967 · 52 min
A scientist goes missing with a new formula.
October 14, 1967 · 52 min
Mannix takes the case of a death row inmate.
October 21, 1967 · 52 min
A threatened suicide.
October 28, 1967 · 52 min
An incommunicado coed and a murdered basketball player.
November 4, 1967 · 52 min
Mannix is hired to vet a prospective bridegroom.
November 18, 1967 · 52 min
Investigating an insurance claim, Mannix finds himself intensely scrutinized.
November 25, 1967 · 52 min
A missing boy and a cover-up.
December 2, 1967 · 52 min
Blackmail in the film industry.
December 9, 1967 · 52 min
A libel suit against a newspaper at the state capital involves politics and the mob.
December 16, 1967 · 52 min
An undercover cop's murder exposes a vice operation.
December 30, 1967 · 52 min
Undercover at a health farm for boozehounds.
January 6, 1968 · 52 min
Mannix checks out an actress with an enemy.
January 13, 1968 · 52 min
A psychopath's next victim might be his wife.
January 20, 1968 · 52 min
The strong friendship between Lew Wickersham and Mannix melts into a violent and deathly feud. The bitter battle begins when Mannix launches an investigation into the theft of a highly secret formula for the development of a laser ray. Stolen plans and sabotage involve Intertect and their agents.
January 27, 1968 · 52 min
The two paths of the case meet at the water's edge.
February 3, 1968 · 52 min
Mannix quits rather than chase a necklace and a mobster, and stumbles into a case of murder and fraud.
February 10, 1968 · 52 min
A missing million leads Mannix out of Intertect as bait for a drug ring.
February 17, 1968 · 52 min
A faith healer gets blackmailed.
March 2, 1968 · 52 min
Old labor woes come to light after an attempted murder.
March 9, 1968 · 52 min
An unsolved murder and an author with enemies.
March 16, 1968 · 52 min
A fake Renoir is suspected, and the model is in danger.
