All Cast
Edward Judd
Dr. Mike Vernon
Yoko Tani
Leader of the Lystrians
Valerie Gearon
Dr. Claire Harland
Lyndon Brook
Brian Carter
Ric Young
The Lystrian
Tsai Chin
Nurse Lim
Barrie Ingham
Major Muncaster
Anthony Sharp
Lawrence Blackburn
Glyn Houston
Police Sergeant Draycott
Ann Castle
Sister Evans
Jean Lodge
Barbara Gough
Ann Martin
Sister Kelly
Tony Wall
Ted
Peter Thomas
Harry
Mark Kingston
Morgan
Emrys Leyshon
Sergeant Williams
Leonard Cracknell
Lloyd
Stephanie Bidmead
Elaine
Norman Mitchell
Lorry Driver
Peter Sinclair
Old Joe
Diane Aubrey
Telephone Operator