Cannon
Treasure of San Ignacio
TV Flash files “Treasure of San Ignacio” as hour 16 of 120 in the TV Flash guide — Cannon (1971–1976) on CBS, season 1, episode 16, aired 1972-01-11, 60 min.
From the desk
How this hour is filed
This leaf is S01E16: listed hour 16 of 120 in the Cannon guide, hour 16 of 24 in season 1. It aired 1972-01-11 (60 min). The listed hour before it is “Devil's Playground” (S01E15). Next is “Blood on the Vine” (S01E17).

Catalog log
Broadcast listing — not a TV Flash recap.
Canon and a retired detective go after religious relics stolen from a Mexican church.
Viewer FAQ
Where does Treasure of San Ignacio sit in the Cannon guide?
S01E16 is listed hour 16 of 120 — hour 16 of 24 in season 1, season 1 episode 16.
When did Cannon S01E16 air?
Treasure of San Ignacio aired 1972-01-11 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…