as Samuel Keifer

as Dr. Keith Simms

as Dr. Bennett

as Professor Sorvad

as Lionel Huxley

as Gervaise de Lutrelle

as Solicitor

as Julian Roberts

as Mr. Scanlon

as The Hon. W. H. Lyttelton

as Leutnant Hicks

as Dr. Philip Grigg

as Richard Barwell

as Hugo Brayford

as Dr. Greg Miller

as Engineer

as Ed Jarvis