Cain's Hundred was a series that ran on NBC during the 1960-61 season. It was one of the numerous Untouchables clones that sprang up after the success of that series on ABC. Cain's Hundred starred Peter Mark Richman as Nicholas Cain, a former mob attorney who decides to switch sides and work for the government. Cain's targets are the top mobsters from around the country on whom he has collected data throughout the years.
After only watching four episodes, I can say that this was a ballbuster of a series that should have lasted longer than it did. It was even grimmer and edgier than The Untouchables. If the series did have a flaw it was that Richman didn't make as great of a leading man as Robert Stack on The Untouchables or Jack Lord on Hawaii Five-O. But it was able to tackle a wider variety of topics than its predecessor in crime drama and the writing and directing were top-notch (at least in the episodes I've watched so far). So if you get a chance to purchase this series from somewhere, it has my highest recommendation. Especially if you're an Untouchables fan like me. Who knows? You might just run into Frank Nitti, Pete Konitz, Eddie Moon, Whitey Grosse, and Augie Viale. With Sammy Davis, Jr. thrown in for good measure.