Terence Morgan

Bert Foster

Jessica Dunning

Annika

Hannah Gordon

Zaylo

Joseph O'Conor

Freeman

Alan Tilvern

Blane

George Pastell

Maj. Khan

Jerry Stovin

Spaceship Captain

Vernon Joyner

Carter

Bill Treacher

Harris

Geoffrey Palmer

Chief Officer

Roy Stewart

Security Guard

John Wyndham

Story

Stanley Miller

Adaptation

Peter Potter

Director

Irene Shubik

Producer