Episode 1
Aired Sep 13, 1972
Bad Cats and Sudden Death
Cannon tries to help a close friend accused of murdering his wife.
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Episode 2
Aired Sep 20, 1972
Sky Above, Death Below
Deaths resulting from a ski-lift tragedy bring Cannon to Colorado to investigate.
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Episode 3
Aired Sep 27, 1972
Bitter Legion
Cannon's search for a missing husband reveals plans for an upcoming, daring robbery.
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Episode 4
Aired Oct 4, 1972
That Was No Lady
Cannon is hired to protect a lawyer (Jessica Walter) whose clients are unpopular with the public.
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Episode 5
Aired Oct 11, 1972
The Stake Out
A rival private investigator pressures Cannon in the matter of a drinking-establishment fire.
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Episode 6
Aired Oct 18, 1972
The Predators
Cannon aids a sheep rancher charged in the death of an illegal Mexican immigrant caught in a coyote trap.
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Episode 7
Aired Oct 25, 1972
A Long Way Down
Cannon tries to clear a black physician who has been framed in a drug-theft case.
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Episode 8
Aired Nov 1, 1972
The Rip-Off
Cannon accidentally uncovers a major hijacking operation.
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Episode 9
Aired Nov 15, 1972
Child of Fear
Cannon leads the hunt for a missing rancher who has been taken hostage by a hostile narcotics smuggler.
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Episode 10
Aired Nov 22, 1972
The Shadow Man
Cannon looks into the disappearance of a real-estate tycoon's body after the man's plunge from a precipice overlooking a development site.
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Episode 11
Aired Nov 29, 1972
Hear No Evil
Frank Cannon is hired by an ex-policewoman whose husband is being blackmailed.
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Episode 12
Aired Dec 13, 1972
The Endangered Species
Cannon's old friend (Andrew Duggan), a boat builder, finds himself charged in his son's hunting-accident death.
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Episode 13
Aired Dec 20, 1972
Nobody Beats the House
Cannon helps collar an underworld figure who is threatening the life of a gambler's wife.
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Episode 14
Aired Jan 3, 1973
The Hard Rock Roller Coaster
An amnesia victim (John Vernon) seems to be holding an important secret wanted by unknown assailants.
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Episode 15
Aired Jan 10, 1973
The Dead Samaritan
An aspiring actress (Arlene Golonka) plays an important part in a plot to take over a vast real estate empire.
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Episode 16
Aired Jan 17, 1973
Death of a Stone Seahorse
A suspect (Sondra Locke) is missing in Cannon's investigation of the death of a famed marine biologist.
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Episode 17
Aired Jan 31, 1973
Moving Target
A photographer (Susan Oliver) finds Cannon hesitant to search for her missing boyfriend after the detective learns his quarry's identity.
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Episode 18
Aired Feb 7, 1973
Murder for Murder
Cannon tries to prevent the violent revenge sought by a high-school teacher whose daughter died at a jet-set party.
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Episode 19
Aired Feb 14, 1973
To Ride a Tiger
Cannon searches for a missing lawyer and exposes the murderer of a police officer.
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Episode 20
Aired Feb 21, 1973
Prisoners
An importer's ex-wife (Geraldine Brooks) hires Cannon when her son is reportedly jailed on a drug charge in Turkey.
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Episode 21
Aired Feb 28, 1973
The Seventh Grave
A rural newspaper editor (Barry Nelson) hires Cannon to find evidence linking a powerful local community leader to a series of murders.
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Episode 22
Aired Mar 7, 1973
Catch Me If You Can
An admitted mass murderer (Anthony Zerbe) hires Cannon and tells the investigator to prevent him from killing again.
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Episode 23
Aired Mar 14, 1973
Press Pass to the Slammer
A news reporter (Marlyn Mason) asks old friend Cannon to help her when she faces a contempt charge for refusing to reveal a news source.
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Episode 24
Aired Mar 21, 1973
Deadly Heritage
A wealthy arts patron (Beverly Garland) hires Cannon to find her long-missing stepson.
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