The Greatest Power (1917): cast, story & where to watch
1917 · Film

Released in 1917, The Greatest Power is a drama film directed by Edward LeSaint.
What it’s about. 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.
Who’s in it. The Greatest Power stars Ethel Barrymore as Miriam Monroe, Harry Northrup as Albert Bernard (as Harry S. Northrup), William B. Davidson as John Conrad and Frank Currier as Randolph Monroe, among others.
Where to watch. Streaming options change often. See the full, country-by-country breakdown on our where to watch The Greatest Power page.
If you liked it. Fans of The Greatest Power tend to enjoy The Shawshank Redemption, The Godfather, Schindler's List and The Godfather Part II.
Frequently asked
- Where can I watch The Greatest Power (1917)?
- Streaming, rental and purchase options for The Greatest Power change frequently. Check our where-to-watch page for the latest availability in your country.
- Who stars in The Greatest Power?
- The Greatest Power stars Ethel Barrymore, Harry Northrup, William B. Davidson, Frank Currier and William Black.
- When was The Greatest Power released?
- The Greatest Power was released in 1917.
