Season 4 · Episode 13 — Duet For Three
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.
Season 4 episodes
E1An acquaintance from Korean War days has a bone to pick.
E2Mannix is up to his private investigator's license in trouble, when a surprising source offers help.
E3A boxer's on the lam after a fixer's murder.
E4Someone keeps missing Mannix, but who's the real target?
E5Mannix is poisoned, and only the poisoner knows how.
E6Death row inmates force a case to be investigated.
E7A plunger disappears after a night in Vegas.
E8An African Premier is in the hospital incognito, where Peggy is laid up with on-the-job injuries.
E9Mannix stumbles into a mob plot at a highway cafe.
E10A Nazi Party figure turns up in the routine investigation of a helicopter crash.
E11A little girl is the key to a murder.
E12A seer foretells the end of Mannix, and it looks as if she may be right.
E13After her husband commits suicide in Hong Kong, Ellen Gray finds she's being shadowed by a Vietnamese for reasons that neither she nor Mann…
E14A widow's husband was a man of mystery.
E15Mannix vaguely remembers a girl's death, but that's about all.
E16A cop under suspicion goes missing.
E17A threatened cop is in need of protection.
E18Threats prevent the discovery of a murder.
E19Ross and Alex are members of Mannix's college football team who put together an unconventional reunion in a ghost town. The reunion ends in…
E20A varsity basketball player vanishes strangely, and is sought curiously.
E21After an automobile accident, an Olympic diver receives threats.
E22An heiress suspects foul play.
E23Joe 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 h…
E24A serial killer's accounts may have been padded.