With Leverage: Redemption season 3 reaching its end, there is no word (yet) on a season 4 of the series, but the end of the season leaves fans in a nice spot to rewatch the very show that kicked everything off. Leverage began in 2008 on TNT and ran for five seasons before the network canceled the show. The original premise sees a group of criminals who operate in different fields (hitter, hacker, grifter, thief) brought together for a single job under a former insurance investigator, the mastermind and honest man of the group, who knows his way around a con.