Bernard Behrens

as Doc Milgrom

as Commander Ilvar

as Robert Lingstrom

as (uncredited)

as Dr. Fisher

as William Saltonstall

as Gabriel Blake

as Prof. Campbell

as Dr. Vernon Stark

as Sir James Barnet

as Mayor Claire

as George O'Connell

as Michael Maddox

as Sir Peter Teazle

as Marshall Tyler

as Father Johansen

as Dr. Heller

as Houseman

as Dr. Parks

as Guitry

as Psychiatrist

as Jennings