15 chapter serial released October 5, 1929 to March 6, 1930. This was filmed as a silent movie and then had a soundtrack added afterwards to make it the first talkie Tarzan. But the soundtrack is mostly grunts, roars and Tarzan yells.
From Wikipedia:
Lord Greystoke (Tarzan) returns to Africa, with Lady Jane and friend Albert Werper, in order to return to Opar. He needs the treasure of Opar in order to secure his estates in England. Werper, however, is actually interested in the gold himself. He is in league with Arab slave trader Achmet Zek who wishes revenge on Tarzan and Lady Jane for himself.
Frank Merrill as "The Lord of the Manor—known to London as the Earl of Greystoke—and to the Jungle as Tarzan, the Tiger!" Frank Merrill reprised his role as Tarzan from Tarzan the Mighty. His performance in these two serials makes him the last silent Tarzan and the first sound Tarzan. Merrill did his own stunts and devised the original Tarzan Yell.
Natalie Kingston as "Lady Jane, his wife, who has left the gaiety of London Society to share his life on the Jungle plantation" Natalie Kingston was again cast as the love interest but this time played the traditional character of Lady Jane instead of Mary Trevor (from Tarzan the Mighty). The change was not explained in the serial.
Al Ferguson as "Albert Werper, Soldier of Fortune—a guest at Greystoke Manor in the guise of a friendly Scientist" Al Ferguson was also again cast as the villain of the story but not the same character (or even a slightly renamed character, as with Jane. In Tarzan the Mighty he played the pirate Black John).
Kithnou as "The High Priestess of the Sun Worshipers—La, who has sworn that she will have no other mate than Tarzan" Mademoiselle Kithnou was a dancer and actress of mixed Indian and European descent from Puducherry, at that time in French India, or possibly from Mauritius.
Sheldon Lewis as "Achmet Zek, a Nomad Chief, against whose traffic in slaves Tarzan has waged relentless war"
Chapter 8: Loop of Death
Chapter 9: Flight of Werper
Chapter 10: Prisoner of the Apes
Chapter 11: The Jaws of Death
Chapter 12: The Jewels of Opar
Chapter 13: A Human Sacrifice
Chapter 14: Tarzan's Rage
Chapter 15: Tarzan's Triumph