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

John Tate

Dundy

Roger Marshall

Screenplay

Alan Bridges

Director

Eileen Welch

Costume Design

Benny Royston

Makeup Artist

Stan Shields

Special Effects

Ronnie Whitehouse

Special Effects

Ronnie Curtis

Casting

Derek Holding

Editor

Scott MacGregor

Art Direction

Jack Kine

Special Effects

Jack Greenwood

Producer

Peter Allwork

Camera Operator

James Wilson

Director of Photography

Roy Norman

Sound Editor

Brian Blamey

Sound Editor

Jean Bear

Hairstylist

Robert Holmes

Story

Bernard Ebbinghouse

Original Music Composer

Red Law

Sound Recordist