Tih Minh

Louis Feuillade's ridiculously entertaining 7-hour mystery serial features kidnappings, daring escapes, slapstick fistfights, secret messages coded in an ancient Hindu dialect, "forgetfulness potions," various forms of mind control, a mountaintop cliffhanging climax, and many, many badass disguises. It also uses an international espionage plot to reflect on World War I and allegorize contemporary French fears about the insidious nature of Bolshevism. The hero is a French explorer and his chief rival is an evil German doctor named Marx. The hero's maid turns out to be a villainess who is secretly in Marx's employ and one of the key title cards is another character's incredulous exclamation that "Marx is here!"

The entire espionage genre, including Fritz Lang's Mabuse cycle and the James Bond films, have their origins here but Feuillade's masterpiece remains the best movie of its kind.