

Plot Summary
Miriam Monroe and John Conrad are two young scientific workers who, independently of each other, have discovered a chemical called exonite. Miriam discovered it while searching for a cure for cancer, while Conrad used it as a basis for a powerful explosive.
Full Cast & Characters

Ethel Barrymore
Miriam Monroe

William B. Davidson
John Conrad

Harry Northrup
Albert Bernard (as Harry S. Northrup)

Frank Currier
Randolph Monroe

William Black
Bradford Duncan

Cecil Owen
Eric Johansen

Frederick Truesdell
Prof. Poole (as Fred C. Truesdell)

Redfield Clarke
Maj. Gen. Foster (as Redfield Clark)

Rudolph De Cordova
Williams

W.M. Armstrong
Capt. Herbert
Director & Crew
Edwin Carewe
Director
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Frequently Asked Questions
Where can I watch The Greatest Power online?
The Greatest Power (1917) is available to stream on various platforms. You can also watch it online via our Watch Online button.
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Who directed The Greatest Power?
The Greatest Power was directed by Edwin Carewe and released in 1917.
How long is The Greatest Power?
The Greatest Power has a runtime of 0 hours and 50 minutes.
Movie Details
- Release Date
- 1917-06-18
- Status
- Released



