Farnham Baxter
— Nick Allan
Cyril Chamberlain
— Editor
Sydney Bromley
— Professor Corkew
Gale Douglas
Veronica Rose
Michael Ripper
Mackenzie Ward
Patricia Hicks
Joyce Linden
Charles Stuart
Gerald Pring
Roy Russell
Anthony Holles
David Keir
Frank Forsyth
Rory McDermott
Joanna Carter
Roddy Hughes
— (uncredited)