A serial killer's accounts may have been padded.
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.
An heiress suspects foul play.
After an automobile accident, an Olympic diver receives threats.
A varsity basketball player vanishes strangely, and is sought curiously.
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.
Threats prevent the discovery of a murder.
A threatened cop is in need of protection.
A cop under suspicion goes missing.
Mannix vaguely remembers a girl's death, but that's about all.
A widow's husband was a man of mystery.
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 seer foretells the end of Mannix, and it looks as if she may be right.
A little girl is the key to a murder.
A Nazi Party figure turns up in the routine investigation of a helicopter crash.
Mannix stumbles into a mob plot at a highway cafe.
An African Premier is in the hospital incognito, where Peggy is laid up with on-the-job injuries.
A plunger disappears after a night in Vegas.
Death row inmates force a case to be investigated.
Mannix is poisoned, and only the poisoner knows how.
Someone keeps missing Mannix, but who's the real target?
A boxer's on the lam after a fixer's murder.
Mannix is up to his private investigator's license in trouble, when a surprising source offers help.
An acquaintance from Korean War days has a bone to pick.
