Corporal Larry Grant and Sergeant "Mac" McGowan, of the United States Marine Corps, are rival for the love of Frances Schiller, but team up to hunt down "The Tiger Shark," a mad, scientific wizard who is holding Sergeant William Schiller, Frances' brother, a prisoner on a wild, jungle island in the Pacific.
Grant Withers
as Cpl. Larry Lawrernce
Adrian Morris
as Sgt. Mack McGowan
Ann Rutherford
as Frances Schiller
Robert Warwick
as Col. W. R. Bennett
George J. Lewis
as Sgt. William Schiller [Chs. 1-4]
Pat O'Malley
as Capt. Grayson [Ch. 1]
Victor Potel
as Fake Native Chief [Ch. 12]
Jason Robards Sr.
as Kota
Warner Richmond
as Metcalf
Robert Frazer
as H.R. Douglas
J. Frank Glendon
as M.J. Buchanan
Donald Reed
as Pedro
