George Fisher

as Rufus Dawe / John Rex

as Dr. Wells

as Archie Craig

as Jim Malkern

as Pierre

as Burt Rawlings

as Rene Smythe

as Captain De Dortain

as Larry Keeling

as M. Andre duval

as Dick Wilbur

as Randolph Lee

as Karl Richter

as Walter Huntley

as Ronald Standish

as Franklin Shirley

as Hugh Travers Jr

as Dr. John Rand

as Howard Turner

as Hugh

as Richard Warner

as Warren Leonard

as Richard Langdon Evans

as Willard Kaine Nottingham

as Henry Pennfield