Donna Mills. Donna Mills was 32 in Someone at the Top of the Stairs as 'Chrissie'.Judy Carne. Judy Carne was 34 in Someone at the Top of the Stairs as 'Gillian'.David de Keyser. David de Keyser was 46 in Someone at the Top of the Stairs as 'Cartney'.Francis Wallis. Francis Wallis was >> in Someone at the Top of the Stairs as 'Gary Masters'.Alethea Charlton. Alethea Charlton was 41 in Someone at the Top of the Stairs as 'Mrs Oxhey'.Brian McGrath. Brian McGrath was 29 in Someone at the Top of the Stairs as 'John'.Peter Cellier. Peter Cellier was 44 in Someone at the Top of the Stairs as 'Colonel Wright'.Clifford Parrish. Clifford Parrish was >> in Someone at the Top of the Stairs as 'Harold'.Scott Forbes. Scott Forbes was 52 in Someone at the Top of the Stairs as 'Mr. Patrick'.Rhoda Lewis. Rhoda Lewis was 39 in Someone at the Top of the Stairs as 'Emma'.Alan Roberto. Alan Roberto was >> in Someone at the Top of the Stairs as 'Jonathan'.Laura Collins. Laura Collins was >> in Someone at the Top of the Stairs as 'Sally Thurston'.Richard Corbet. Richard Corbet was >> in Someone at the Top of the Stairs as 'Chauffeur'.Charles Hill. Charles Hill was 66 in Someone at the Top of the Stairs as 'Policeman'.Gilly Flower. Gilly Flower was 64 in Someone at the Top of the Stairs as 'Pub Guest (uncredited)'.John Sichel. John Sichel was >> in Someone at the Top of the Stairs as 'Director, Producer'Brian Clemens. Brian Clemens was 41 in Someone at the Top of the Stairs as 'Writer'Cecil Clarke. Cecil Clarke was >> in Someone at the Top of the Stairs as 'Executive Producer'Laurie Johnson. Laurie Johnson was 46 in Someone at the Top of the Stairs as 'Music'