Sci-Fi Adventure Action Fantasy
It is 1865 and Union prisoners use a military balloon to escape a Southern prison camp near the end of the Civil War. The balloon drifts for days and finally lands on a mysterious volcanic island with very unusual inhabitants. Also landing, in a better aircraft, is Rulu, a visitor from Mercury. She seeks a radio-active material that will enable her to manufacture an explosive that will destroy the world or, at least, the portion known as Earth in this 15 Chapter Serial from the 1950s.
Directed by
Spencer Gordon Bennet
Tom Tyler
Union Dispatch Rider
William Fawcett
Mr. Jackson
Terry Frost
Ayrton - The Wild Man
Anthony Warde
Confederate Officer
Stanley Blystone
Confederate Officer
Marshall Reed
Jack Pencroft
Gene Roth
Pirate Capt. Shard
Pierre Watkin
Confederate Officer
Richard Crane
Capt. Cyrus Harding
Hugh Prosser
Gideon Spillet
Bernie Hamilton
Neb
Leonard Penn
Capt. Nemo
Frank Ellis
Pirate
Zon Murray
Thug in Park
Knox Manning
Narrator (voice)
Frank O'Connor
Confederate Officer
Karen Randle
Rulu of Mercury
Ralph Hodges
Herbert 'Bert' Brown
Rusty Wescoatt
Moley - Shard Henchman
George Robotham
Mercurian
Roy Butler
Thug in Park
Sid Ross
Mercurian
Wally West

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