Elenco - The Greatest Power
Ethel Barrymore
Miriam Monroe
William B. Davidson
John Conrad
Harry Northrup
Albert Bernard (as Harry S. Northrup)
Frank Currier
Randolph Monroe
William Black
Bradford DuncanCecil Owen
Eric Johansen
Frederick Truesdell
Prof. Poole (as Fred C. Truesdell)Redfield Clarke
Maj. Gen. Foster (as Redfield Clark)Rudolph De Cordova
WilliamsW.M. Armstrong
Capt. Herbert