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Frank Cannon was a bald, middle aged, overweight private investigator who mostly took cases he knew would get him a substantial fee so he could live the high life he loved so well. Cannon, however, very rarely ever fired a gun and his poor car usually ended up with all the damage in each episode. William Conrad starred in the title role of this Quinn Martin produced show.
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Episode Info

Final: 5x25 -- Mad Man (Mar/03/1976)

Cannon is hired to investigate when an Army researcher seems to have gone insane for no obvious reason. Another cry for help comes out of Cannon's past. A girl he once knew is concerned about her husband's -he's a research scientist- fits of irrational behavior. they touch on mind-boggling drugs here, a topical subject.
William ConradWilliam Conrad
As Frank Cannon

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1x0: Cannon recap: In Gallitin, NM, Sands Motel owner Ken Langston checks in a guest, Jerry Straiter. The next morning at 4 a.m. Langston collects his fishing gear and drives off into the country. When he arrives, Straiter attacks and clubs him dead. The murderer then drives Langston’s body to the docks, ties it to some concrete blocks, and prepares to dump it into the water. Sergeant Calhoun with the police is driving by, spots Straiter, and opens fire when the killer goes for his gun. As Straiter falls into the water, Calhoun sees a woman run to her car and drive away... read more.
Recurring Guests

Charles Bateman as Sheriff Lamar Hendricks (6 eps)
Patrick Culliton as TBD (6 eps)
Tom Pittman as Deputy Bill Morgan (6 eps)
Arthur Adams as TBD (5 eps)
John Vernon as Ross McClintock (5 eps)
Simon Scott as James London (5 eps)
Donovan Jones as Director (5 eps)
Dana Elcar as Sam (4 eps)
Hank Brandt as Kelly (4 eps)
James McCallion as Melvin Blake (4 eps)

View All Recurring Guests
Warning: Cannon guide may contain spoilers
Classification: Scripted
Genre: Drama | Mystery
Status: Canceled/Ended
Network: CBS ( USA)
Runtime: 60 Minutes
Premiere: September 14, 1971
Ended: March 03, 1976
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