
1950
Man-woman team of investigators uncover a gang whose mad scientist leader has developed an invisibility chemical and plans to build a mercenary army of invisible men.

Richard Webb
Lane Carson

Aline Towne
Carol Richards

Stanley Price
The Phantom Ruler

Lane Bradford
Burton

John Crawford
Harris

George Meeker
"Harry Long"

Edward Keane
Warren Madison

Dale Van Sickel
Otto Wagner, aka "Frank Martin"

Douglas Evans
"James Hunter"

John Hamilton
"Henry Miller"

Roy Gordon
Mr. Moore

Harold Goodwin
Kirk - Body-Shop Henchman [Ch.11] (uncredited)

Marshall Reed
Roadblock Cop [Ch. 1, 7]

David Sharpe
Garage Watchman [Ch. 3] / Armored Car Guard [Ch. 11]

George Magrill
Henchman Sam [Ch. 4-5]

Guy Teague
Decoy & Dumptruck Henchman [Ch. 5, 7]

Tom Steele
Henchman Bill 'Mack' Haines [Chapters 5, 10]

Eddie Parker
Barn Henchman Stoner [Ch.8]

Keith Richards
Doctor [Ch. 12]

Duke Taylor
Second Roadblock Cop [Ch. 1 bit]

Mark Strong
Bank Watchman [Ch.1 bit]

Bert LeBaron
Crooked Watchman [Ch. 2 bit]

Frank O'Connor
Chemical Truck Cop [Ch. 5 bit]

Forrest Burns
Watchman Joe [Ch. 5 bit]

Carey Loftin
Dynamite Henchman Dirk [Ch. 6 bit]

Tom Monroe
Cave Policeman [Ch. 7 bit]

Howard M. Mitchell
Second Garage Watchman [Ch. 7 bit]

Charles Sullivan
Squadcar Cop [Ch. 7 bit]

George Volk
Second Armored Car Guard [Ch. 11 bit]

Congo Bill

Jungle Raiders

The Masked Marvel

The Purple Monster Strikes

Manhunt of Mystery Island

The Lost Planet

The Great Adventures of Captain Kidd

Flying Disc Man from Mars

Spy Smasher

Jungle Queen

Winners of the West

The Great Alaskan Mystery

The Adventures of Dusty Bates

The Monster and the Ape

Hawk of the Wilderness

Daredevils of the Red Circle

Federal Operator 99

Sea Raiders

The Invisible Dr. Mabuse

Cody of the Pony Express