CONGO BILL (1948). 15 Chapters. Spanish subtitles. Sepiatone.

CONGO BILL is a Columbia movie serial of 1948 based on the DC Comics character Congo Bill, later named Congorilla.
Plot

A girl is about to inherit a fortune, but she is missing in Africa. Her family engages Congo Bill, an adventurer, to find her, and bring her back to civilization. He follows a legend about a mysterious White Queen, but his path is full of difficulties, by an inhospitable jungle, and the man who will lose the fortune if the girl is found alive...
Cast

Don McGuire as Congo Bill, famed hunter and animal trainer
Cleo Moore as Queen Lureen / Ruth Culver, white ruler of a forbidden valley in Africa and the missing heiress to the Culver fortune
Jack Ingram as Cameron, mysterious trader
I. Stanford Jolley as Bernie McGraw, villainous trustee of the Culver fortune
Leonard Penn as Andre Bocar, owner of the seedy African bar The Green Parrot Inn, in Bernie McGraw's pay and working for his own ends
Nelson Leigh as Dr Greenway
Charles King as Kleeg, employee of Andre Bocar in The Green Parrot Inn
Armida Vendrell as Zalea
Hugh Prosser as Morelli
Neyle Morrow as Kahla
Fred Graham as Villabo
Rusty Wescoatt as Ivan
Anthony Warde as Rogan
Stephen Carr as Tom McGraw, murdered brother of Bernie McGraw and trustee of the Culver fortune
William Fawcett as Blinky
Knox Manning as Narrator
Frank O'Connor as Frank, cafe clerk
Eddie Parker as torturer
Stanley Price as Nagu's friend