"A long-distance lorry driver; a spaceman; a volunteer under reduced environmental conditions; a man in solitary confinement: the discomfort of these people is shared by Doran - when he can't put his finger on the panic button."
Peter Eyre
as Doran
Susan Glanville
as Wife
Frederick Treves
as Chief
David Hargreaves
as Gavitt
Anthony Douse
as Dr. Peel
Alan Mitchell
as Smith
Tony Robinson
as Matthews
Robert Marsh
as Graham
Morris Perry
as Jones
Christopher Crooks
as Subject
Stephen Lyons
as Volunteer subject
Matthew Robinson
Director
Eric Colthart
Writer
David Rose
Producer