
Plot
Chandu consults his crystal ball and sees that Nadji, Princess of Egypt, is in danger. She is about to be sacrificed by the black magic cult of Ubasti. Headed for the magic island of Lemuria, he is shipwrecked , washed ashore and captured. He becomes invisible, escapes and after numerous detours is able to rescue the princess.
Trailer
Cast

Bela Lugosi
Frank Chandler (Chandu)

Maria Alba
Nadji - Princess of Egypt

Murdock MacQuarrie
The Supreme Voice of Ubasti [Chs. 4-12]

Clara Kimball Young
Dorothy Regent

Dean Benton
Bob Regent (as Deane Benton)

Phyllis Ludwig
Betty Regent

Lucien Prival
Vindhyan, High Priest [Chs. 1-4]

Cyril Armbrister
Henchman Sutra [Chs.1-4]

Wilfred Lucas
Capt. Wilson [Chs. 4-12]

Josef Swickard
Tyba, The White Magician [Chs. 8-12]

Baby Peggy
Judy Allen

Dick Botiller
Morta

Iron Eyes Cody
Cat Man

Louise Emmons
Sisaba

John Ince
Mr. James

Isabel La Mal
Mrs. James

Bryant Washburn
Prince Andra

J.J. Clark
Vitras