Maverick - Season 4 - Eps 21: Diamond Flush
Con artist Ferguson knocks Beau Maverick unconscious during an unsuccessful attempt to hoist a priceless diamond necklace from a French countess. Ferguson claims that the countess' diamond is fake and that he was in the process of replacing it with the real thing when Beau startled him. Ferguson offers Maverick $5,000 to switch diamonds. Beau is being set up for robbery by Ferguson and his equally devious wife.
About Maverick

Title: Maverick
First Air Date: 1957-09-22
Last Air Date: 1962-04-22
Status: Ended
Rating: 6.8/10 (from 37 votes)
Language: EN
Seasons: 5
Total Episodes: 124
Network: ABC
Genres: Comedy, Western
Production Companies: Warner Bros. Television
Synopsis
The Maverick boys - Bret, Bart, Beau and Brent - are a clan of well-dressed dandies, gamblers who'd much rather make their money playing cards than messing up their fine clothing with actual work. Sly and clever, none of the Mavericks are much for acts of derring do, but they can be courageous when the situation calls for it. Most often, however, they live by their wits and considerable charm.
Cast

Jack Kelly
Bart Maverick