Racket Squad (1950-1953, syndicated, CBS). Exposes con artists and schemes. A good one.

Accidentally on Purpose
Anyone Can Be a Sucker
Bill of Sale Racket
Blessed Expense
Carpet Scam
Case of the Empty House
Check and Double Check  woc
Child Care Racket
Chuck Martin Case
Condemned Cattle
Dancing Lady
Desperate Money
Don't Be a Sucker (pilot)
Fabulous Mr. James
Figures Don't Lie
Fire Eater
Five Star Swindle
Hearse Chaser
Kite High
Knockout
Long Shot
Man in Uniform
Matchmaker
Lucky Lady
Mr. Average Husband
Old Flame
One Angle Too Many
One Big Dream
Perfect Match
Perpetual Pellet Case
Phony geologist/oil well
Place for Grandma
Raccoon Hunt
Salted Mine
Serenade for a Sucker
Soft Touch
Staff of Life
Sting of Fate
Suit Club
System
Two for One
Two Little Country Girls

Recently added in 1/03:

Babies for Sale
Case of the Expensive Tumble
Check and Double Check
Christmas Caper
His Brother’s Keeper
Know Your Family Tree
Romance Unlimited
Take a Little, Leave Little