All Cast
Roger Moore
Harold Pelham
Anton Rodgers
Tony Alexander
Olga Georges-Picot
Julia Anderson
Freddie Jones
Dr. Harris
Hugh Mackenzie
James Pelham
Kevork Malikyan
Luigi
Thorley Walters
Frank Bellamy
Ruth Trouncer
Miss Bird
Hildegard Neil
Eve Pelham
John Welsh
Sir Charles Freeman
Edward Chapman
Barton
Laurence Hardy
Mason
Charles Lloyd Pack
Jameson
Gerald Sim
Morrison
Aubrey Richards
Research Scientist
Anthony Nicholls
Sir Arthur Richardson
John Carson
Ashton
John Dawson
Barber