German cinema continues to be saluted Wednesdays on TCM this month, and tonight the lineup begins with a rare, long German film I don’t think has ever being televised in the U.S. prior to tonight: 1922’s Dr. Mabuse (pictured), director Fritz Lang’s mammoth movie divided into two 2.5-hour chunks, The Gambler and Inferno. Rudolf Klein-Rogge stars in the title role. And after the two 1922 films comes a sequel (at 12:45 a.m. ET), filmed 11 years later, with the same director, star