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The Invisible Monster (1950)

Approved  |   |  Action, Adventure, Crime  |  10 May 1950 (USA)
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Reviews: 4 user | 6 critic

Evil villain plots to take over the world using an army of invisible soldiers.



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Cast overview, first billed only:
Richard Webb ...
Lane Carson
Aline Towne ...
Carol Richards
Lane Bradford ...
Stanley Price ...
John Crawford ...
George Meeker ...
Harry Long
Keith Richards ...
Doctor [Ch.12]
Dale Van Sickel ...
Otto Wagner / 'Frank Martin' [Chs. 1, 10]
Tom Steele ...
Bill 'Mack' Haines [Chs. 5,10]
MacDuff, Roadblock Cop [Chs.1, 7-9]
Forrest Burns ...
Joe, Watchman [Ch.5]
Eddie Parker ...
Stoner, Barn Henchman[Ch.9] (as Ed Parker)
Frank O'Connor ...
Hogan [Ch.5]
Charles Regan ...
Art (as Chas Regan)
Charles Sullivan ...
Grogarty, Squad Car Cop [Chs.7-8]


Evil villain plots to take over the world using an army of invisible soldiers.

Plot Summary | Add Synopsis


DOOMED!!!...By the frenzied fury of the Monster WHO STRIKES WITHOUT WARNING ! (original poster) See more »






Release Date:

10 May 1950 (USA)  »

Also Known As:

The Phantom Ruler  »

Box Office


$152,115 (estimated)

Company Credits

Production Co:

Show detailed on  »

Technical Specs


(12 episodes)

Sound Mix:

(RCA Sound System)

Aspect Ratio:

1.37 : 1
See  »

Did You Know?


Chapter Titles: 1. Slaves of the Phantom 2. The Acid Clue 3. The Death Car 4. Hightway Holocaust 5. Bridge to Eternity 6. Ordeal by Fire 7. Murder Train 8. Window of Peril 9. Trail to Destruction 10.High Voltage Danger 11.Death's Highway 12.The Phantom Meets Justice See more »


Although 'Charles Regan' is listed in screen and press cast, he did not appear in this film. See more »


Edited into Slaves of the Invisible Monster (1966) See more »

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User Reviews

Okay Republic actioner.
15 July 1999 | by (Blacksburg, VA) – See all my reviews

If you haven't seen many serials, this would be a good start. If you're a serial veteran, you'll recognize almost all of the cliffhanger endings, which have been lifted from other Republic serials. Richard Webb, later TV's Captain Midnight, delivers a stiff performance and a lot of punches: at least one set per chapter is demolished in a slugfest. John Hamilton, TV's Perry White in Superman, has a small part in the first and final chapter. For plot, there's even less logic than usual: bad guy wants to take over world with an army of invisible soldiers, but can barely manage to keep himself invisible. Overall, below average.

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