Lewis Fiander
Dr. Thornton

Beryl Reid
Mrs. Flynn

Patrick Stewart
Prof. Macklin

T. P. McKenna
O'Connor

Siân Phillips
Annabella Rock

Phil Davis
Billy Bedlam

Philip Jackson
Andrew Merry-Lees

Nichola McAuliffe
Alice

David Bamber
Cronin

Danny Schiller
Praying Howard