as Dr. Maynard Drew
as Robert Sinclair
as John Schuyler
as Lawson
as George Evans
as John Strickland
as Prince Hero
as Henry Taylor
as Sir John Dare
as Col. Rudolph von Knorr
as Sir Edward Leighton
as Harold Chase
as Hugh Maxwell
as Howard Rosedale
as José María Lavendera
as David Poe Jr (as Hugh E. Thompson)
as Jeb
as Cecil Andrews
as Pike
as Salvatore, Ruth's father
as Ross Kennion
as John Arms
as John Alden
