Michael Sinelnikoff

as Henry

as Elder Councilman

as Lord Bullock

as Old Fritz Vincken (voice)

as Dr. Arthur Summerlee

as Dean Dewitt

as Jeremiah Putter

as Professor Arthur Summerlee

as Summerlee

as Mr. Reynolds

as Summerlee

as Henry Armitage

as Sir Charles Devlin

as Professeur du Conservatoire

as Conference Doctor

as Mark Thomas

as Haywood

as Hospital Patient

as Dr. R. Roberts

as Judge

as Lord Rutherford

as Professor Clemens

as Dr. Rodes

as Bookish Man

as Sir Cyril Sharpe

as Dr. Hynd

as Jonathan