Mannix has side action on a kidnap case.

Mannix is hired to find out any dirt on Govenor-elect Adam Pierson, and that's when the trouble star...

Mannix is set up for the murder of an old girlfriend's husband.

A scientist goes missing with a new formula.

Mannix takes the case of a death row inmate.

A threatened suicide.

An incommunicado coed and a murdered basketball player.

Mannix is hired to vet a prospective bridegroom.

Investigating an insurance claim, Mannix finds himself intensely scrutinized.

A missing boy and a cover-up.

Blackmail in the film industry.

A libel suit against a newspaper at the state capital involves politics and the mob.

An undercover cop's murder exposes a vice operation.

Undercover at a health farm for boozehounds.

Mannix checks out an actress with an enemy.

A psychopath's next victim might be his wife.

The strong friendship between Lew Wickersham and Mannix melts into a violent and deathly feud. The b...

The two paths of the case meet at the water's edge.

Mannix quits rather than chase a necklace and a mobster, and stumbles into a case of murder and frau...

A missing million leads Mannix out of Intertect as bait for a drug ring.

A faith healer gets blackmailed.

Old labor woes come to light after an attempted murder.

An unsolved murder and an author with enemies.

A fake Renoir is suspected, and the model is in danger.

A lip reader ""overhears"" a murder plot.

A missing wife is wanted by the mob.

An injured client disappears.

Mannix enters a race in which a driver is killed.

A dead ex-con has Mannix's name on him.

Part of a manuscript gone missing holds the answer to a homicide.

A doctor's son is kidnapped to force a failed surgery.

A missing wife, reported dead, is a difficult quarry.

Mannix finds new evidence in the case of an embezzler he sent up the river.

A young heir wakes up bloodied and minus a grlfriend.

On a helicopter trip, Mannix thinks he sees a murder being committed.

Mannix is called to testify against an ex-con he sent up, but his time suspects a frame.

An old pal asks Mannix for help; when he arrives at the man's rural town, there's murder afoot.

A model's suicide proves doubtful.

A political campaign and the death of a small-time crook.

A attempt on his life forces Mannix into a complex search.

An old foe's girlfriend dies suspiciously.

Peggy's boyfriend goes on the lam.

A court-martialed soldier has plans for revenge.

Scotland Yard is after millions from a robbery, and they're not the only ones.

A missing contractor leads to mixed motives and a doubtful case.

Peggy's boyfriend is suspected in a drug case.

A newspaper publisher's daughter is implicated in the death of a mobster.

A boarding school marked for demolition sets off a mystery involving a corpse and a quarter-million.

Mannix cooperates in a police investigation.

Two pals of Peggy's are accused of murder, and the real killer is elusive.

A colleague's death leads Mannix into a dubious investigation.

Old home week, as Mannix looks into a murder and tries to make up with his father.

Someone is out to get a film star.

Mannix reopens a malpractice case against opposition.

Three thugs hold Mannix, Peggy, and a woman hostage, claiming they want the $312,000 she has in a br...

An accidental drowning has many surprising facets.

A secretary has an enemy, but who?

A hit-and-run case lands Mannix in the middle of a gang war.

A killer's attempt leaves Mannix blind.

The attempted murder of an executive leads Mannix to several likely suspects.

A stolen thoroughbred has Mannix buffaloed.

A policeman's son is suspected in a robbery.

Peggy's late husband is named on a list of payoffs.

A wealthy man hires Mannix to find the person blackmailing him—eventually leading to Mannix being su...

Eyewitnesses peg Mannix's client, but the victim isn't what he seems, either.

A domestic quarrel, and a missing secretary, make for a confusing case—“Rashomon”-style.

Mannix tries to locate an heir, who is brought into danger by the attention.

A murder in the offing implicates an old army chum, but the victim's identity is uncertain.

Mannix has an enemy who seems to be dead.

The strange utterances of a disturbed young girl are clues in a case of robbery and murder.

A colleague's death leaves Mannix with the evidence he was murdered for.

A TV host's murder proves difficult to investigate, as everyvbody wants it canceled.

Mobsters try to extort a million from a small town.

Carnival mishaps may be aimed at the proprietor.

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 Vietnames...

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 reuni...

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. S...

A serial killer's accounts may have been padded.

A blackmail victim is headed for prison.

A big kidnapping plot and an insignificant victim.

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

A labor dispute in his home town ends in murder.

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

A skid row bum is concealing his identity.

A contract is taken out on a Little League manager.

Strange circumstances surround an arrest by Mannix.

Peggy is kidnapped to force Mannix into an investigation.

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

Blackmail has its twists and turns.

Hired and fired, Mannix pursues a missing person.

Blackmail turns to murder and beyond.

Evidence rules out one confession, indicates another.

Disappearing enemies and friends force Mannix into a blackmail investigation.

Murder on the golf course leads to open season on Mannix, who's looking for valuable microcircuit pl...

A dubious client is caught in his own machinations.

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

Mannix in the middle of a gang war.

In defense of a client accused of murder.

A singer piles into mounting trouble with the law.

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

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

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

A gang boss engineers a deceptive getaway.

A priest's vows give a murderer a second chance.

A medical practitioner finds that someone is out to get him.

A yachting misadventure draws Mannix into its deeps.

An aircraft prototype is debuted under mysterious circucmstances.

Undercover in New Orleans.

A amnesiac veteran is up to his stripes in mischief.

A stamp collection goes missing, and a starving artist gets rich.

Return of a gang boss with indeterminate friends and enemies.

Rivalry amongst the orange trees.

A colleague's murder leaves an open casebook.

Exposing a cover-up puts Mannix in hot water.

A trail of evidence indicates a friend of Peggy's.

A murder investigation bumps up against hard evidence.

A murder suspect is a man with no identity.

A boastful nemesis takes Peggy for bait.

A traffic accident uncovers a clueless murder.

Peggy goes undercover to nab a dope ring.

A ship lost at sea leaves a survivor and a curious tale.

Conflicting confessions have to be sifted.

A political candidate asks to be vetted.

Someone is trying to kill a bum for his ""coat of many colors.""

An ex-con's daughter is suspected in murders surrounding the unrecovered loot.

Political blackmail turns to mischief when the blackmailer is found to be long dead.

A premonition is the only clue.

A quiet town is ruffled by Mannix in his search for a missing youth.

An escaped convict saves Mannix's life.

Mannix probes a journalist's murder.

A street gang plots to do Mannix in to make a name for itself.

A search inquiry proves hazardous, and Mannix finds his client is a ringer.

On vacation, Mannix discovers a hit operation.

A girl disappears, and Mannix investigates her Vegas connection.

An opera diva emerges from retirement and is met with inexplicable attempts on her life.

Mannix tracks down stolen jewels also wanted by a blind hood.

An actress claims a bizarre murder attempt.

An old girlfriend makes Mannix the man in the middle of rival smugglers.

A plane crash is followed by murder attempts.

A patriot in a dictatorship needs medical help.

The patriotic resistance finds a traitor amongst them.

In possession of a piece of evidence, Mannix is shot and left for dead.

A double set-up puts Lt. Malcolm behind bars.

An open and shut case gets padlocked.

A little girl is killed leaving no identity.

A psychiatrist who treats sociopaths is supposed to have committed suicide.

A murder's clues indicate a cop.

A clueless investigation goes on pluck.

Bribery money is taken in a robbery.

The ravages of heroin.

Murder on the rock circuit.

A kidnapper's ransom note calls for plunging in a card game.

Out of a coma, back in the line of fire.

Peggy gets mistaken for a stool pigeon.

A Leonardo, a forger of currency, is sought by practically everybody.

The vortex of the paranoid: Mannix is threatened and framed.

Old friend dies on a mob run, they suspect Mannix.

Japanese consular matters entail a private eye and Mannix's cooperation

Mannix takes the case of a muder victim in a photograph.

Small town rules may include murder.

His wife says somebody else came back from the crash.

A Hollywood murder may have been a mistake.

An old buddy tests Mannix's limits.

A colleague on the shady side of the street is killed.

A chance meeting between two Vietnam veterans proves fatal for one of them after they are spotted by...

A triangle in academia.

A kidnapping case suddenly emerges from the files.

A skyscraper burglary leavs Mannix and a pal in a fix.

The death of an inventor raises questions of motive.

On an island off the South American coast, Mannix seeks out the rescuer of a client's son.

An assassination plot is revealed in the course of Mannix's investigation.

A soft case with plush lining gives Mannix cause for uneasiness.

An incognito hitman loses his handiwork.

Ratted out and up against it, a dealer takes hostages.