The Adventures of Tarzan based on Tarzan and the Jewels of Opar
The Adventures of Tarzan (1921) is a 15 chapter movie serial which features the third and final appearance of Elmo Lincoln as Tarzan. The serial was produced by Louis Weiss, written by Robert F. Hill and Lillian Valentine (partially based on the novels The Return of Tarzan and Tarzan and the Jewels of Opar by Edgar Rice Burroughs), and directed by Robert F. Hill and Scott Sidney. The first chapter was released on December 1, 1921.Plot
The serial's prologue features Edgar Rice Burroughs himself.Tarzan rescues Jane from Arab slave traders after they become marooned in Africa.  They return to the cabin where his parents lived before their deaths. Jane is captured by Queen La of Opar, taken to that hidden city, and is to be made a sacrifice.  Tarzan rescues her and they escape.  Nikolas Rokoff and William Cecil Clayton, the usurper to Tarzan's title of Lord Greystoke, learn that Jane has a map to the city (which contains fabulous riches in exotic jewels), tattooed onto her back.  They kidnap her and attempt to loot the city. Tarzan braves many perils, finally rescues Jane, defeats the villains and escapes La's amorous clutches.