Cannon
Triangle of Terror
TV Flash files “Triangle of Terror” as hour 71 of 120 in the TV Flash guide — Cannon (1971–1976) on CBS, season 3, episode 23, aired 1974-03-13, 60 min.
From the desk
How this hour is filed
This leaf is S03E23: listed hour 71 of 120 in the Cannon guide, hour 23 of 24 in season 3. It aired 1974-03-13 (60 min). The listed hour before it is “Bobby Loved Me” (S03E22). Next is “The Stalker” (S03E24).

Catalog log
Broadcast listing — not a TV Flash recap.
A grieving wife hires Cannon to fly to the West Indies to investigate the death of her husband.
Viewer FAQ
Where does Triangle of Terror sit in the Cannon guide?
S03E23 is listed hour 71 of 120 — hour 23 of 24 in season 3, season 3 episode 23.
When did Cannon S03E23 air?
Triangle of Terror aired 1974-03-13 and is listed at 60 minutes.
Is Cannon's size the joke?
No. Conrad's bulk is text, not a punchline. The series is a heavyweight PI who never auditioned as a pretty leading man and did not need to.
In the series
Why this series still plays
William Conrad's Frank Cannon is the heavyweight detective who never auditioned as a leading man and did not need to. Radio's Gunsmoke marshal finds a new generation via Lincoln Continentals and stubborn casework. A Quinn Martin mystery that stars a voice, a bulk, and zero apology.
So the group chat wants a pretty-boy PI in a tuxedo (Lana would call it a *gown of authority*) and then Cannon rolls up in a Lincoln Continental like that was the whole look. CBS, 1971–1976: William Conrad's Frank Cannon is overweight, expensive, and brilliant, and Edward Hume and Quinn Martin put him at the center of the early-1970s detective boom without asking him to audition as a leading man. Radio's Gunsmoke marshal found a new generation via stubborn casework and gourmet side trips. (I said spoiler-free.…
Filed against
- William Conrad as Frank Cannon
William Conrad’s Frank Cannon never auditioned as a leading man and did not need to — heavyweight detective, Lincoln Continentals, stubborn casework, a Quinn Martin mystery that stars a voice, a bulk, and zero apology. Radio muscle…