Season 4

An acquaintance from Korean War days has a bone to pick.

Mannix is up to his private investigator's license in trouble, when a surprising source offers help.

A boxer's on the lam after a fixer's murder.

Someone keeps missing Mannix, but who's the real target?

Mannix is poisoned, and only the poisoner knows how.

Death row inmates force a case to be investigated.

A plunger disappears after a night in Vegas.

An African Premier is in the hospital incognito, where Peggy is laid up with on-the-job injuries.

Mannix stumbles into a mob plot at a highway cafe.

A Nazi Party figure turns up in the routine investigation of a helicopter crash.

A little girl is the key to a murder.

A seer foretells the end of Mannix, and it looks as if she may be right.

After her husband commits suicide in Hong Kong, Ellen Gray finds she's being shadowed by a Vietnamese for reasons that neither she nor Mannix can fathom.

A widow's husband was a man of mystery.

Mannix vaguely remembers a girl's death, but that's about all.

A cop under suspicion goes missing.

A threatened cop is in need of protection.

Threats prevent the discovery of a murder.

Ross and Alex are members of Mannix's college football team who put together an unconventional reunion in a ghost town. The reunion ends in murder and reveals years of deceit and jealousy that come to light in a series of bizarre and morbid.

A varsity basketball player vanishes strangely, and is sought curiously.

After an automobile accident, an Olympic diver receives threats.

An heiress suspects foul play.

Joe Mannix receives an urgent letter from a woman named Lynn Sargent asking him to fly to Arizona. She meets him at the airport and hands him a check for $1,000 and a small sealed package, telling him the money is his fee to take the package to the Los Angeles Police Department. Just as she does so, two men try to take the package, but Mannix manages to retain it after a scuffle. But the mystery deepens when the package turns out to contain nothing but blank sheets of paper -- and the police chief in the town tells Mannix that Lynn Sargent died a month earlier in a hit-and-run accident.

A serial killer's accounts may have been padded.