Cannon is hired by a woman to find her ex-con son, who claims he saw illegal weapons in crates at his brother's manufacturing plant.



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Episode complete credited cast:
Richard Alexander
Mrs. Alexander
David Birney ...
Terry Alexander
Lt. Sam Levaca
Bill Penski
Andrew Rubin ...
Ben Kendall
Stewart Bradley ...
Arms Connection on Dock
Erik Holland ...
Lee Pulford ...
Hostess at Robaire's
Richard's Henchman
Howard Curtis ...


Cannon is hired by a woman to find her ex-con son, who claims he saw illegal weapons in crates at his brother's manufacturing plant.

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Action | Crime | Mystery | Drama


Not Rated | See all certifications »




Release Date:

7 March 1972 (USA)  »

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Did You Know?


The title is based on the biblical story told in Genesis 4 of the curse of Cain and the mark of Cain, where God declared that Cain, the firstborn son of Adam and Eve, was cursed for murdering his younger brother Abel. God placed a mark upon him to warn others that killing Cain would provoke the vengeance of God. See more »


Richard Alexander: He's crazy.
Frank Cannon: Maybe we should all be that kind of crazy, "brother."
See more »

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User Reviews

Pretty good--and they actually looked like brothers.
9 June 2013 | by (Bradenton, Florida) – See all my reviews

"Cain's Mark" is an episode of "Cannon" that guest stars Bradford Dillman and David Birney. The pair play brothers and it's nice to see that the producers got two actors who actually look like they could be brothers.

The show begins with a mother asking "Cannon" to help her locate her youngest son (Birney). It seems that he's a problem child and she is worried that now that he's disappeared, he won't show up for his probation meetings--and he'll be sent to prison. However, after Cannon finds the young man, he realizes that there is far more going on--that his older brother (Dillman) has evil intentions. So, while mom thinks she's doing a good thing, she's actually setting up her boy to be killed. So, it's up to Cannon to save the day and expose the 'good son' for what he is--a conniving scum-bag.

The plot to this one is pretty original and exciting. No complaints from me about this one--and I am usually pretty hard to please.

3 of 3 people found this review helpful.  Was this review helpful to you?

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