The Greatest Power

Этель Бэрримор

Miriam Monroe

William B. Davidson

John Conrad

Harry Northrup

Albert Bernard (as Harry S. Northrup)

Frank Currier

Randolph Monroe

Frederick Truesdell

Prof. Poole (as Fred C. Truesdell)

William Black

Bradford Duncan

Cecil Owen

Eric Johansen

Redfield Clarke

Maj. Gen. Foster (as Redfield Clark)

Rudolph De Cordova

Williams

W.M. Armstrong

Capt. Herbert